Introduction
Did you know that our bodies create about a gallon of mucus in just two days? I do. In fact, I know a lot of other interesting information about the human body and YOU WILL TOO if you read my paper! Within this document, you will find six different body system essays including the muscular, skeletal, circulatory, respiratory, digestive, and nervous systems, which all work together to operate our body. All of these systems have different components, each with their own unique functions that help to keep us alive. However, each system cannot operate alone -- they need each other to be successful. For example, the nutrients gathered by the digestive system get distributed throughout the body in the circulatory system. Over the previous 12 weeks, we gathered information, organized our thoughts, and paraphrased what trusted websites taught us about each system. We worked with responsibility partners and our papers definitely benefited from the collaboration. Just like each human body system needs to rely on the other systems, we relied on each other to improve our writing and our process. The following is the result of our hard work...
Skeletal System
Our skeletal system is made up of 206 bones. These bones work together to provide our body with support so that we can stand, help us move so we can walk around and protect our vital organs like our heart and our brain.
Did you know that our bodies create about a gallon of mucus in just two days? I do. In fact, I know a lot of other interesting information about the human body and YOU WILL TOO if you read my paper! Within this document, you will find six different body system essays including the muscular, skeletal, circulatory, respiratory, digestive, and nervous systems, which all work together to operate our body. All of these systems have different components, each with their own unique functions that help to keep us alive. However, each system cannot operate alone -- they need each other to be successful. For example, the nutrients gathered by the digestive system get distributed throughout the body in the circulatory system. Over the previous 12 weeks, we gathered information, organized our thoughts, and paraphrased what trusted websites taught us about each system. We worked with responsibility partners and our papers definitely benefited from the collaboration. Just like each human body system needs to rely on the other systems, we relied on each other to improve our writing and our process. The following is the result of our hard work...
Skeletal System
Our skeletal system is made up of 206 bones. These bones work together to provide our body with support so that we can stand, help us move so we can walk around and protect our vital organs like our heart and our brain.
Our bones even make and store blood cells for our circulatory system. Without our bones, we would be be nothing more than a pile of skin, organs, and muscles on the floor. We wouldn’t be able to move and our organs wouldn’t be safe.
Our bones are made up of many layers. These layers are important because we need our bones to be strong, yet lightweight. In order to achieve this goal, the outside layer of bone is made up of solid, compact bone that makes our bones strong and dense. The next layer of bone is called cancelous bone (a.k.a. spongy bone). This layer allows our bones to be lightweight and transitions us from compact bone into bone marrow. Bone marrow is a thick and spongy section in the middle of the bone where red and white blood cells are formed.
Finally, our bones are all covered in a thin membrane called periosteum which is where our muscles to attach to bones. So that is how bones are structured in order to keep our bodies strong, yet lightweight.
Although bones are extremely important, we wouldn’t be able to move without joints. Joints are places where two or more bones meet. There are several types of joints in our bodies but we’ll just focus on four of them. The first type of joint is called a hinge joint. Just like the hinges on the door, they allow movement back and forth. We have hinge joints at our elbows and knees, and we even have them in our knuckles. Another type of joint is called a ball and socket joint. This is where one bone has a ball at the end of it and the other bone has a “baseball mitt” for a ball to sit on. Our shoulders and hips are examples of a ball and socket joints.
The third type of joint that we studied was called a gliding joint. Gliding joints are places where two or more bones meet and slide past each other. Our wrist and ankles are two examples of gliding joints. The last type of joint is called the pivot joint. A pivot joint works when one bone acts like a ring and the other bone sits inside the ring and rotates. Our neck is an example of a pivot joint because it can rotate around and move up and down. At each joint a soft, squishy material can be found between bones which keeps them from rubbing each other which would be painful. This material is called cartilage. Cartilage, which is bendable, can also be found in our ears and nose. But all of this wouldn’t be possible if it weren't for ligaments holding all of our bones together at each joint. Ligaments are long, stretchy tissue that connect bones and stabilize joints. Without these ligaments in place, bones wouldn’t stay attached to each other and wouldn’t allow joints to move. It’s interesting to note that people who are double-jointed actually just have extremely stretchy ligaments. Joints definitely make movement possible and without them, we’d have a hard time getting around our world.
Bones definitely are important parts of the human body. They allow us to move, help provide us structure and support, protect our important organs, and even make blood cells. Bones are designed so well they are strong, yet lightweight. Thanks to joints, ligaments, and cartilage, we are able to bend and move throughout our world. Finally, the muscles in our body attach to bones, giving us the power to actually move around!
Muscular System
The muscular system provides the body with movement while assisting with posture and body positions. There are three types of muscle groups within the body which include skeletal, smooth and cardiac muscles, each of which play an important role in core body movement and function.
Muscles provide the framework for movement in the body and without muscles, our bones would not be able to move and our organs would not work. The heart, for example, would not be able to pump blood or the lungs would not be able to help us breathe without muscles. Skeletal muscles are attached to the bones of the skeleton and move various parts of the body. That movement by the skeletal muscles is voluntary because you can choose to move body parts like your neck, arms and legs to walk, talk, run, swim and write. The muscles contract and when seen through a magnifying glass, they appear striped, have more than one nucleus and can be up to 30 centimeters long. Unlike skeletal muscles, smooth muscles are involuntary and found in your internal organs assisting in digesting food and eyesight while cardiac muscles are found in the heart and assist in moving blood throughout the body. These three muscle groups combined help make the body work better together.
Voluntary muscles help your body do what you want it to do. You can control your muscles to help you go running, walking, biking even waving or eating. But they need a signal from the brain to either contract to work or relax to their normal position. These are two of the states in which muscles exist and the third is stretched muscles. This is seen in skeletal muscles where the tendons, which are a band of fibrous connective tissue, attach the muscle to two bones across the joint so as one contracts, the other relaxes. Tendons also connect muscle to muscle. Groups of muscles also work together such as biceps and triceps in the arm so when you’re lifting weights, you’re voluntarily strengthening those muscles.
Involuntary muscles don’t rely on being told what to do by the brain but just work on their own. Cardiac muscles are involuntary muscles found only in the heart or myocardium and pump the blood throughout the body. Muscles in the digestive system move the food down the esophagus to the stomach then to the bowels then push out the waste. Involuntary muscles are also responsible for raising the tiny hairs on your arms when you’re cold without you even thinking about it. Smooth muscles are also involuntary muscles and line the walls of such organs as the stomach, intestines and bladder and also the esophagus which may reject food when you’re sick. These muscles are at work all over the body without us even knowing it.
In conclusion, every muscle in the body has a task to complete. There are voluntary and involuntary muscles. Voluntary means that we can control what that muscle does like moving your arm or making a fist. Involuntary means that we cannot control the muscle like your heart beating and the esophagus bringing the food down to you stomach. When you get a cramp in your leg after running a mile, it just means that the muscles in your leg have tightened from all the hard work. We would not be able to live without muscles because they help our body move around and keep our heart beating.
Circulatory System
The circulatory system is responsible for transporting different materials such as food and water throughout the body. This system is also responsible for transporting air and nutrients. The circulatory system transports all of these elements to billions of body cells. This system also takes away all of the bad elements the body cells produce such as carbon dioxide.
The circulatory system is a body wide network of blood, blood vessels, and lymph nodes. Powered by the heart, it is the body's distribution to organs and oxygen. The organs and essential nutrients are necessary to survive and be able to function properly.
Blood is a specialized body fluid that carries many things that are very important to the body. These things are nutrients, oxygen, and hormones which are very important because without them, we would not be able to live. The blood also takes away all of the bad elements the body does not need and brings it to the urinary system. White blood cells are the cells of the immune system. They are in charge of keeping our body safe from bad diseases, infections, and foreign invaders. All white blood cells are from the multipotent cell in the bone marrow. Red blood cells contain a material called hemoglobin. This material makes blood red and thick. This material also makes blood able to carry oxygen from your lungs throughout your body. It also makes us able to carry carbon dioxide from other parts of our body to help our lungs be able to exhale. Platelets are often a forgotten component of blood. Red blood cells, white blood cells, and platelets are all essential but plasma is as important and does many important jobs such as carry lots of blood components throughout the body in a liquid fluid in which they travel.
Blood vessels consist of arteries, arterioles, capillaries, venules, and veins. All of these components are very important. Without these, we would not be able to live because all blood is carried in these vessels. The arteries are strong and flexible, they carry blood away from the heart and bear the highest blood pressure. Since arteries are elastic, they can narrow when the heart is calm and relaxed. The arteries branch into smaller and smaller vessels and eventually become arterioles. Arteries are the blood vessels that deliver oxygen in the blood from the heart to the tissues to our body. Each artery is a muscular tube lined with smooth tissue that has three layers. Veins are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood to the heart. The exceptions are pulmonary and umbilical veins which carry oxygenated blood to the heart. Veins are less stronger than arteries but arteries are close to the skin. There are also valves that prevent veins from backflow. Capillaries are the smallest of the blood vessels. Their job is to distribute oxygenated blood to the heart from the arteries to the tissues of the body. The capillaries are the central of the circulatory system, essentially between the the veins and arteries. When pink areas of the skin are compressed, this causes blanching because the blood is pushed out of the capillaries.
Your heart sits between your lungs and in the middle of your chest. Its job is to pump blood to all of the organs, tissues, and cells in your body through blood vessels. This is very important because blood delivers oxygen and we need that in every cell so that we can fight diseases. Your heart has four chambers which are the two atriums and the two ventricles. The right atrium receives oxygen poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the bad blood to the lungs. The left atrium receives the oxygen rich blood from the lungs and pumps it to the left ventricle. The left atrium is on the left posterity side.The left atrium is also one of the four chambers in the heart and its job is to act as the holding chamber for blood returning from the lungs to pump and transport blood to other areas of the heart. The left ventricle is also one of the left chambers of the heart. It is located in the bottom left portion of the heart, below the left atrium and separated from the mitral valve. As the heart contracts, blood flows into the left atrium which goes through the mitral valve and eventually goes into the left ventricle. The right atrium is is among four chambers of the heart that pumps blood through two atria and ventricles. The right ventricle is just below the right atrium and pumps oxygen-depleted blood to the lungs.
In conclusion, the circulatory system is very important and we would definitely not be able to survive without it. The parts in this system are also very important because without blood and nutrients, we would not be able to survive either. Without the heart, we would definitely not be able to live because the heart runs basically the whole body. One of the heart’s most important jobs is it controls all the blood and where the blood goes to give us oxygen.
Respiratory System
The respiratory system is in charge of supplying air to all of the body parts in the body. Without this system, the body would not be able to function because we need air to survive. This system accomplishes its job by inhaling and exhaling oxygen rich air and separating the carbon dioxide and bringing all of the good air to the rest of the body and lungs. This system is made up of many groups of tissues and organs that enable you to be able to breathe. This system includes your lungs, blood vessels, and your air ways. All of these parts in the respiratory system work together to enable us to breathe.
Air enters the body through either the nose or the mouth then travels through the trachea to the lungs which is where the air travels through the bloodstream to the lungs. The mouth and nose are the main and only ways we get air. We get the air by inhaling through our mouth and nose and transferring that air to the lungs. Because the nostrils are smaller, they do not get as much air to the lungs. Also, when a person exhales through the nostrils, it creates pressure which slows the air escape so the lungs have more time to extract oxygen from them. The nasal passage is another very important part of the respiratory system and it is a channel for air flow through the nose. The walls of the nasal passage are coated with mucous membranes that contain little hair-like cells that help bring mucous down the throat. The epiglottis is the flexible flap at the end of the larynx in the throat. It acts as an air way to change the airflow to go to the lungs or the gastrointestinal tract to help get air every where in the body and not just in one place. The larynx is in charge of making sure the body doesn’t choke on anything that blocks the airway. The larynx is in charge of keeping the pharynx and the trachea attached to the neck. The larynx is also in charge of making sure that food and drinks do not block the airway when you are trying to breath. In addition, the larynx is in charge of the voice box. The voice box produces the words you say and the notes you sing.
Everyone has two vocal cords in their larynx. The vocal cords vibrate when someone speaks and that vibration creates speech. If one or both aren’t working, that person will experience voice issues or even breathing/swallowing problems. The voice box is located in the neck and it does many very important jobs. This part is involved in many jobs such as swallowing, breathing, and voice production. Sound is produced when the vocal cords vibrate which makes sound. The sound is determined by the amount of tension in the vocal cords. The trachea is commonly known as the windpipe. This tube is only about 4 inches long but it does many jobs. The trachea begins just under your larynx and it runs down behind the sternum. Then the trachea divides into two different tubes called the bronchi and the bronchus which goes off into the lungs.
Air moves to your lungs when you breathe through your mouth or nose and it goes down your throat or through the nasal passage if inhaled through the nose. The air then travels through the trachea which goes through the bronchi and bronchus and into the lungs. The pair of lungs are situated in the rib cage and are so big, they take up most of the space in your chest. They aren’t the same size because the left one is smaller than the right one to leave room for your heart. Once the air goes into the lungs, they take out all the carbon dioxide and keep only the good air. The lungs are very important and without these, you would not be able to breathe or even live.
When a person breathes the air goes down the throat through the trachea and into the bronchial tube. This tube is the main passageway for air that goes into the lungs. Without this air way, we probably would not get enough to the lungs. After the air goes into the bronchial tube, it travels down to the bronchus and bronchi which lead into the lungs. Each one gets air from the trachea and the bronchial tube and then goes into each of the lungs. There is a right bronchi and a left one for each lung. If you only had one bronchi, only one lung would get air. After the air goes through the two bronchies, they eventually turn into the bronchioles. The bronchioles keep fanning out the carbon dioxide until they finally become the alveoli. Gas exchange happens in the alveoli. The alveoli is in charge of making sure no carbon dioxide and other bad air is entering the rest of the body. Oxygen from inhaled air is infused through the walls of the alveoli which eventually goes into the red blood cells and then is carried throughout the body.
In conclusion, the respiratory system is very important to the body. We would not be able to function properly or even live. This system also is the main part and only part that supplies air to your whole body.
Digestive System
The digestive system plays a very important role in the body. It is a group of organs that convert food into nutrients to provide nutrients to the whole body. You need everything in the digestive tract except the gall bladder because if you didn’t have all of these organs, the body wouldn’t be able to get any nutrients or it wouldn’t be able to get rid of things the body does not need.
Also known as the oral cavity, the mouth is a very important part of the human body. The mouth is a hollow cavity that allows you to be able to breathe and eat. The mouth contains teeth, tongue, and the salivary glands. All of these work together in the mouth. The mouth also plays a major role in speech because of the movements of the tongue, lips, and cheeks. The teeth also play a major role in the mouth since their job is to rip and tear the food apart so that it can go down our throat without us choking. There are two rows of teeth and 12 molars. The incisors and canine teeth do most of the ripping, gripping, and tearing. Mechanical digestion involves the ripping and the tearing of the food. It is also in charge of ripping it into very small pieces and getting the nutrients partially out. Saliva plays a very important role of breaking the food down so we can eat it. Saliva makes sure that the dry crackly food becomes soft and moist so that it is easier to eat and swallow. Chemical digestion involves the breaking down of the food and removal of the nutrients necessary for the cells. Chemical digestion begins in the mouth when it mixes with the saliva and it carries down to the stomach. The tongue is another one of the many organs in the mouth. The tongue consists of 8 interwoven and striated muscles. These muscles can move in many different directions which makes the tongue very flexible. The tongue also consists of many taste buds that enable you to be able to taste your food. One more job of the tongue is that it rolls your food up into a ball so it is easier to go down your throat. Once the teeth are done chewing your food, the tongue forms it into a bolus. The bolus is a ball of food that is mixed with your saliva, enzymes, and mucus that help break down the food so it is easier to swallow.
As a person swallows, the food travels down the throat through the trachea and to the esophagus which goes down to the stomach. The esophagus is usually 25 to 30 centimeters long and 1.5 to 2 centimeters wide. The esophagus is hollow so that food, saliva, and liquids are able to go down to the stomach. As the food is traveling down the esophagus, a maneuver happens called peristalsis. Peristalsis is almost like a massage, it is where many muscles work together and contract to push the food down to the stomach. Without the peristalsis, the food would not be able to get to the stomach and we would not get any food. There is also reverse peristalsis which is throw up. If your body does not want something in the stomach, it turns on reverse peristalsis which sends the food back up.
The food travels down the esophagus while peristalsis sends it down to the stomach. The stomach is an elastic j-shaped pouch. The stomach is hollow so that food and liquids are able to sit in there while it is digesting. This organ is very cool because it is able to expand to fit different amounts of food. The stomach measures about 12 inches long so it can fit next to the liver. The stomach is big enough to easily hold one liter of food and liquids. Inside the stomach, there are many digestive juices. These juices are from the glands in the lining of the stomach. Most of the juices that the glands produce are acids and enzymes. These juices are very important to the stomach because they break down the fat and carbohydrates in the food so that it is easier to digest. Chyme is a partially digested piece of food that is forced into the small intestine. Chyme has a low Ph balance which means that it has many acids. This makes it easier for the food to be digested.
The food comes into the small intestine from the stomach. The food starts as semi solid sludge when it goes into the small intestine and when it comes out and goes into the large intestine, it is very watery. The small intestine is very long so it can keep taking the nutrients out of the food. The small intestine is about 6 meters or 20 feet long. Villi lines the small intestine that absorbs nutrients for the blood cells. The villi also contain small specialized cells that transport nutrients to the blood. The small intestine has one main job and that is to absorb nutrients passing in the blood stream. The nutrients are very important to our body because we need nutrients to be able to survive.
Tubes carry enzymes from the pancreas to the small intestine. The pancreas produces juices called enzymes that help digest food. The pancreas also produces hormones that control some activities in the body. The enzymes in the pancreas contain an active ingredient called pancrelipase which is a mixture of different digestive juices that help the body to be able to digest the food easier. The pancreatic enzymes have three different ingredients that help digest food: amylase, lipase, and protease. All of these ingredients are one of the main parts that break down the food in the body.
The liver cells produce bile. All of the bile flows into small channels called canaliculi. All of these small channels drain into bile ducts, all of the bile ducts form together to form larger ducts to eventually form the left and right hepatic duct. The common hepatic duct connects with another duct which connects to the gall bladder. The gallbladder is a small pouch that sits right under the liver. Before a meal, the gallbladder is usually large, about the size of a small pear because it is full of bile. But then after a meal, the gallbladder is flat like a deflated balloon. When there is food or bile, the gallbladder responds and squeezes stored bile into the small intestine through ducts. The gallbladder is not essential, you can get it removed usually without any problems. Bile is a yellow-green fluid that is produced by the liver and is stored in the gallbladder. After it reaches the gallbladder, it passes through the common bile duct and is stored in the duodenum to help digest fat.
The large intestine is the final section of the gastronomical tract. The large intestine’s job is to absorb any final water or vitamins and convert them to human waste. The large intestine is smaller in length than the small intestine and it is considerably larger in diameter. The large intestine is about 5 feet in length and 2.5 inches in diameter. The large intestine gets much larger as the smooth muscle tissues of the intestinal wall relax. Most of the body's water is absorbed by the inner lining of the small intestine. The small intestine is very long which makes it easier to absorb a lot more water. The small intestine is very long but it can absorb the water very quickly as well. All of the water that the small intestine gets goes right into the bloodstream and is used for many different organs.
The end of the digestive tract is the anus. It is an opening that enables human waste to leave the body. The anus is formed partially from surface layers, including skin and partly of the intestine. The anus is lined with continuation of the external skin. The anus has a muscular ring so it is able to open and close to keep in human waste or get it out.
In conclusion, the digestive system is a very important part of the body. It is in charge of getting all of the nutrients we need and to get rid of the stuff we don't need. It also controls all of the enzymes and many digestive juices that help us break down food so we can digest it better.
Nervous System
The nervous system consists of brain, spinal cord, sensory organs, and all of the nerves that connect all of these organs to the rest of the body. Together, all of these organs are in charge of making sure that you can feel things and making sure that everything in your body is working right. All of the the neurons in the body transmit signals all through the body to make sure things are working like when you are walking and talking.
The brain is the control center to the whole body. It is in charge of making sure that all of the things in the body are working correctly. This is the main thing that sends neurons all through the body and maybe going down to the leg and telling it to walk. The brain consists of 4 different sections and each section is in control of a different part of the body. The cerebrum is the most important region of the brain. It is in charge of the memory and the sensory integration. It can influence the functions of the bottom part of the brain. The cerebrum is also in charge of the seat of region and the planning of the things that the body does. Then, the cerebellum is one of the most recognizable parts of the brain due to the unique shape and where it is placed. It is very important because it is the part of the brain that controls most of the things you do everyday such as walking and writing. The cerebellum is also incharge of balance and if you get your cerebellum damaged you would not be able to balance, stand, and you may even die. In addition, the cerebellum also controls most of your muscle coordination and your muscles would not work properly without this part of the body. The brainstem is the the tube like structure at the bottom of your brain. The brainstem is in charge of sending messages through the spinal cord and down to all the parts of the body telling it what to do. The brain stem also controls some of the most important things that the body does such as breathing, swallowing, heart rate and it tells you if you are either awake or sleepy. One more thing that the brainstem controls is that it coordinates with the heart and lungs telling them what to do and if something is wrong with them. All of these parts of the brain are some of the ways that keep the body working and make sure everything is going correctly in the body.
The nerves serve a very important role in the body. When you stub your toe, the nerves in the foot send a signal up to the brain telling your mouth to say THAT HURT! The nerves are also partially in charge of keeping the body in balance and making sure you don't fall over or hurt yourself. Sensory nerves send signals all through the body such
as feeling, sight, and sound. When you feel something, your sensory nerves send a signal up to the brain which sends a signal to the eyes which tells the eyes to look to see what you are feeling. They also send information all through the body and send them through the spinal cord and to the brain. The main function of the motor nerves is to send signals from the brain, through the spinal cord and down to any muscles telling the legs to walk or the arm to lift a heavy object up. If you hurt any of these nerves or damage them, you could end up have muscle spasms or have cramps in your arms and legs or even muscle weakness. Like your brain, your spinal cord is very important. It sends signals all through your body and is making sure everything in your body is working correctly and that everything is going correctly outside of your body. There are 31 pairs of spinal nerves in your spinal cord connecting it to the rest of the body and sending signals through your body and up to your brain. Neurons are nerve cells, they are the fundamental part of the nervous system. Their job in the body is to get signals and make the signals go to different parts of the body telling that part what to do or what the problem is. The neurons are designed to send signals very fast through the body and send them very fast throughout long distances. What the synapse contributes to the body is that it sends information all through the body. The information can be sent from nerve to nerve or even nerve to muscle. One more thing that the synapse does for the body is that it makes sure information is being sent through the body at all times. Dendrites are one of the main parts of a neuron. Dendrites are the structures that are on top of the neurons that receive messages and then send them through the body. The messages that the dendrites revive come in two different forms: excitatory and inhibitory. One more thing about dendrites is that the neurons need something to keep them active or else they will not work. The dendrites job is to find that active thing and send it to all the neurons in the body. The purpose of the axon is to send electronic chemical signals all through the body and to send them to the neurons. These nerves have to be active because they sometimes send signals very far throughout the body. The neurons in you legs and feet have axons and they can get up to about three feet long.
The five senses are very important to the body. If one of your senses does not work like if you were blind, it would be hard for your body to know what is happening around them or where they are. Sight is very important to our body. It makes sure that we are able to see at all times and to make sure we don't bump into something and get hurt. The sense of sight begins when different photon cells from the world hit the lense of our eye which goes to the retina. Once the image goes through the retina, it travels through different nerves which sends the signal up to the brain telling us what is going on outside the body. Another one of the major senses is hearing. The way this sense contributes to the body is how we are able to hear what is going on on the outside of the body. We are able to hear if there is a train coming or even hear the whistle blow at your hockey game. The sense of hearing starts when different sound vibrations are heard by the ear and are processed and then turned into different words or sentences. The signals are transmitted and sent to the brain through neurons telling you how to respond or not say anything at all. Your sense of taste serves many purposes in the body. It helps you chew, swallow, talk, and sing. Your tongue is made up of many different muscles. Each muscle helps the tongue flex and move the food around in your mouth. The tongue has over 10,000 taste buds and each one helps you taste what you are eating. Taste is very helpful because you could be eating a raw chicken which could give you salmonella but you would be able to taste whether it is or not. The front of you tongue has more taste buds then the back of the tongue so you can taste the food before it is chewed up and turned into bolus. The sense of taste is very useful and you use it everyday. The sense of smell is very important as the rest of the senses because you are able to smell the delicious food you are about to eat or smell the smoke from a fire. The sense of smell is able to detect different odors in bad situations like a fire. The main job of the nose is to smell. It is very cool how the body is able to smell things when our sense of hearing or sight is not working like if we were in a dark room with headphones on. The final sense is the sense of touch and this helps us to be able to feel what we are standing on or to feel the railing on the stairs. Our skin contains many different tiny nerve endings that creates our sense of touch. You are able to feel if there is pain or if you are touching something very hot or very cold. The bottom layer of the skin is called the dermis which sends a signal to the brain telling us what we are touching and if we should get away from the thing like fire.
In conclusion, this is the last system in the human body. This system contains all of the senses and all of the communication throughout the body. The spinal cord and the brain both send signals throughout the body. The signals go through the spinal cord and goes to the brain telling the body how to react. There are many different nerves in the nervous system and each kind of nerve is in charge of sending a different signal through the body. This system does not have as many parts to it as the other system but every single part is very important to the body and each one helps send signals throughout the body making us aware of everything around us.
Conclusion to the Human Body Research Paper
In conclusion, the human body has many systems that each work hard to do specific jobs to benefit our bodies, but they also work together successfully to ensure our well-being. The skeletal system provides support, protection and structure while the muscular system allows us to move, breathe, and digest food. The circulatory system transports oxygen and nutrients to the cells of our body while getting rid of waste products and the respiratory system swaps out the oxygen and carbon dioxide. Finally, the digestive system converts food into energy while the nervous system uses that energy to make decisions and maintain memories. I appreciate the time you took to read these essays and hope that you learned something valuable. So the next time you move a muscle or take in a breath, I hope you’ll think about how impressive our human body really is!
Our bones are made up of many layers. These layers are important because we need our bones to be strong, yet lightweight. In order to achieve this goal, the outside layer of bone is made up of solid, compact bone that makes our bones strong and dense. The next layer of bone is called cancelous bone (a.k.a. spongy bone). This layer allows our bones to be lightweight and transitions us from compact bone into bone marrow. Bone marrow is a thick and spongy section in the middle of the bone where red and white blood cells are formed.
Finally, our bones are all covered in a thin membrane called periosteum which is where our muscles to attach to bones. So that is how bones are structured in order to keep our bodies strong, yet lightweight.
Although bones are extremely important, we wouldn’t be able to move without joints. Joints are places where two or more bones meet. There are several types of joints in our bodies but we’ll just focus on four of them. The first type of joint is called a hinge joint. Just like the hinges on the door, they allow movement back and forth. We have hinge joints at our elbows and knees, and we even have them in our knuckles. Another type of joint is called a ball and socket joint. This is where one bone has a ball at the end of it and the other bone has a “baseball mitt” for a ball to sit on. Our shoulders and hips are examples of a ball and socket joints.
The third type of joint that we studied was called a gliding joint. Gliding joints are places where two or more bones meet and slide past each other. Our wrist and ankles are two examples of gliding joints. The last type of joint is called the pivot joint. A pivot joint works when one bone acts like a ring and the other bone sits inside the ring and rotates. Our neck is an example of a pivot joint because it can rotate around and move up and down. At each joint a soft, squishy material can be found between bones which keeps them from rubbing each other which would be painful. This material is called cartilage. Cartilage, which is bendable, can also be found in our ears and nose. But all of this wouldn’t be possible if it weren't for ligaments holding all of our bones together at each joint. Ligaments are long, stretchy tissue that connect bones and stabilize joints. Without these ligaments in place, bones wouldn’t stay attached to each other and wouldn’t allow joints to move. It’s interesting to note that people who are double-jointed actually just have extremely stretchy ligaments. Joints definitely make movement possible and without them, we’d have a hard time getting around our world.
Bones definitely are important parts of the human body. They allow us to move, help provide us structure and support, protect our important organs, and even make blood cells. Bones are designed so well they are strong, yet lightweight. Thanks to joints, ligaments, and cartilage, we are able to bend and move throughout our world. Finally, the muscles in our body attach to bones, giving us the power to actually move around!
Muscular System
The muscular system provides the body with movement while assisting with posture and body positions. There are three types of muscle groups within the body which include skeletal, smooth and cardiac muscles, each of which play an important role in core body movement and function.
Muscles provide the framework for movement in the body and without muscles, our bones would not be able to move and our organs would not work. The heart, for example, would not be able to pump blood or the lungs would not be able to help us breathe without muscles. Skeletal muscles are attached to the bones of the skeleton and move various parts of the body. That movement by the skeletal muscles is voluntary because you can choose to move body parts like your neck, arms and legs to walk, talk, run, swim and write. The muscles contract and when seen through a magnifying glass, they appear striped, have more than one nucleus and can be up to 30 centimeters long. Unlike skeletal muscles, smooth muscles are involuntary and found in your internal organs assisting in digesting food and eyesight while cardiac muscles are found in the heart and assist in moving blood throughout the body. These three muscle groups combined help make the body work better together.
Voluntary muscles help your body do what you want it to do. You can control your muscles to help you go running, walking, biking even waving or eating. But they need a signal from the brain to either contract to work or relax to their normal position. These are two of the states in which muscles exist and the third is stretched muscles. This is seen in skeletal muscles where the tendons, which are a band of fibrous connective tissue, attach the muscle to two bones across the joint so as one contracts, the other relaxes. Tendons also connect muscle to muscle. Groups of muscles also work together such as biceps and triceps in the arm so when you’re lifting weights, you’re voluntarily strengthening those muscles.
Involuntary muscles don’t rely on being told what to do by the brain but just work on their own. Cardiac muscles are involuntary muscles found only in the heart or myocardium and pump the blood throughout the body. Muscles in the digestive system move the food down the esophagus to the stomach then to the bowels then push out the waste. Involuntary muscles are also responsible for raising the tiny hairs on your arms when you’re cold without you even thinking about it. Smooth muscles are also involuntary muscles and line the walls of such organs as the stomach, intestines and bladder and also the esophagus which may reject food when you’re sick. These muscles are at work all over the body without us even knowing it.
In conclusion, every muscle in the body has a task to complete. There are voluntary and involuntary muscles. Voluntary means that we can control what that muscle does like moving your arm or making a fist. Involuntary means that we cannot control the muscle like your heart beating and the esophagus bringing the food down to you stomach. When you get a cramp in your leg after running a mile, it just means that the muscles in your leg have tightened from all the hard work. We would not be able to live without muscles because they help our body move around and keep our heart beating.
Circulatory System
The circulatory system is responsible for transporting different materials such as food and water throughout the body. This system is also responsible for transporting air and nutrients. The circulatory system transports all of these elements to billions of body cells. This system also takes away all of the bad elements the body cells produce such as carbon dioxide.
The circulatory system is a body wide network of blood, blood vessels, and lymph nodes. Powered by the heart, it is the body's distribution to organs and oxygen. The organs and essential nutrients are necessary to survive and be able to function properly.
Blood is a specialized body fluid that carries many things that are very important to the body. These things are nutrients, oxygen, and hormones which are very important because without them, we would not be able to live. The blood also takes away all of the bad elements the body does not need and brings it to the urinary system. White blood cells are the cells of the immune system. They are in charge of keeping our body safe from bad diseases, infections, and foreign invaders. All white blood cells are from the multipotent cell in the bone marrow. Red blood cells contain a material called hemoglobin. This material makes blood red and thick. This material also makes blood able to carry oxygen from your lungs throughout your body. It also makes us able to carry carbon dioxide from other parts of our body to help our lungs be able to exhale. Platelets are often a forgotten component of blood. Red blood cells, white blood cells, and platelets are all essential but plasma is as important and does many important jobs such as carry lots of blood components throughout the body in a liquid fluid in which they travel.
Blood vessels consist of arteries, arterioles, capillaries, venules, and veins. All of these components are very important. Without these, we would not be able to live because all blood is carried in these vessels. The arteries are strong and flexible, they carry blood away from the heart and bear the highest blood pressure. Since arteries are elastic, they can narrow when the heart is calm and relaxed. The arteries branch into smaller and smaller vessels and eventually become arterioles. Arteries are the blood vessels that deliver oxygen in the blood from the heart to the tissues to our body. Each artery is a muscular tube lined with smooth tissue that has three layers. Veins are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood to the heart. The exceptions are pulmonary and umbilical veins which carry oxygenated blood to the heart. Veins are less stronger than arteries but arteries are close to the skin. There are also valves that prevent veins from backflow. Capillaries are the smallest of the blood vessels. Their job is to distribute oxygenated blood to the heart from the arteries to the tissues of the body. The capillaries are the central of the circulatory system, essentially between the the veins and arteries. When pink areas of the skin are compressed, this causes blanching because the blood is pushed out of the capillaries.
Your heart sits between your lungs and in the middle of your chest. Its job is to pump blood to all of the organs, tissues, and cells in your body through blood vessels. This is very important because blood delivers oxygen and we need that in every cell so that we can fight diseases. Your heart has four chambers which are the two atriums and the two ventricles. The right atrium receives oxygen poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the bad blood to the lungs. The left atrium receives the oxygen rich blood from the lungs and pumps it to the left ventricle. The left atrium is on the left posterity side.The left atrium is also one of the four chambers in the heart and its job is to act as the holding chamber for blood returning from the lungs to pump and transport blood to other areas of the heart. The left ventricle is also one of the left chambers of the heart. It is located in the bottom left portion of the heart, below the left atrium and separated from the mitral valve. As the heart contracts, blood flows into the left atrium which goes through the mitral valve and eventually goes into the left ventricle. The right atrium is is among four chambers of the heart that pumps blood through two atria and ventricles. The right ventricle is just below the right atrium and pumps oxygen-depleted blood to the lungs.
In conclusion, the circulatory system is very important and we would definitely not be able to survive without it. The parts in this system are also very important because without blood and nutrients, we would not be able to survive either. Without the heart, we would definitely not be able to live because the heart runs basically the whole body. One of the heart’s most important jobs is it controls all the blood and where the blood goes to give us oxygen.
Respiratory System
The respiratory system is in charge of supplying air to all of the body parts in the body. Without this system, the body would not be able to function because we need air to survive. This system accomplishes its job by inhaling and exhaling oxygen rich air and separating the carbon dioxide and bringing all of the good air to the rest of the body and lungs. This system is made up of many groups of tissues and organs that enable you to be able to breathe. This system includes your lungs, blood vessels, and your air ways. All of these parts in the respiratory system work together to enable us to breathe.
Air enters the body through either the nose or the mouth then travels through the trachea to the lungs which is where the air travels through the bloodstream to the lungs. The mouth and nose are the main and only ways we get air. We get the air by inhaling through our mouth and nose and transferring that air to the lungs. Because the nostrils are smaller, they do not get as much air to the lungs. Also, when a person exhales through the nostrils, it creates pressure which slows the air escape so the lungs have more time to extract oxygen from them. The nasal passage is another very important part of the respiratory system and it is a channel for air flow through the nose. The walls of the nasal passage are coated with mucous membranes that contain little hair-like cells that help bring mucous down the throat. The epiglottis is the flexible flap at the end of the larynx in the throat. It acts as an air way to change the airflow to go to the lungs or the gastrointestinal tract to help get air every where in the body and not just in one place. The larynx is in charge of making sure the body doesn’t choke on anything that blocks the airway. The larynx is in charge of keeping the pharynx and the trachea attached to the neck. The larynx is also in charge of making sure that food and drinks do not block the airway when you are trying to breath. In addition, the larynx is in charge of the voice box. The voice box produces the words you say and the notes you sing.
Everyone has two vocal cords in their larynx. The vocal cords vibrate when someone speaks and that vibration creates speech. If one or both aren’t working, that person will experience voice issues or even breathing/swallowing problems. The voice box is located in the neck and it does many very important jobs. This part is involved in many jobs such as swallowing, breathing, and voice production. Sound is produced when the vocal cords vibrate which makes sound. The sound is determined by the amount of tension in the vocal cords. The trachea is commonly known as the windpipe. This tube is only about 4 inches long but it does many jobs. The trachea begins just under your larynx and it runs down behind the sternum. Then the trachea divides into two different tubes called the bronchi and the bronchus which goes off into the lungs.
Air moves to your lungs when you breathe through your mouth or nose and it goes down your throat or through the nasal passage if inhaled through the nose. The air then travels through the trachea which goes through the bronchi and bronchus and into the lungs. The pair of lungs are situated in the rib cage and are so big, they take up most of the space in your chest. They aren’t the same size because the left one is smaller than the right one to leave room for your heart. Once the air goes into the lungs, they take out all the carbon dioxide and keep only the good air. The lungs are very important and without these, you would not be able to breathe or even live.
When a person breathes the air goes down the throat through the trachea and into the bronchial tube. This tube is the main passageway for air that goes into the lungs. Without this air way, we probably would not get enough to the lungs. After the air goes into the bronchial tube, it travels down to the bronchus and bronchi which lead into the lungs. Each one gets air from the trachea and the bronchial tube and then goes into each of the lungs. There is a right bronchi and a left one for each lung. If you only had one bronchi, only one lung would get air. After the air goes through the two bronchies, they eventually turn into the bronchioles. The bronchioles keep fanning out the carbon dioxide until they finally become the alveoli. Gas exchange happens in the alveoli. The alveoli is in charge of making sure no carbon dioxide and other bad air is entering the rest of the body. Oxygen from inhaled air is infused through the walls of the alveoli which eventually goes into the red blood cells and then is carried throughout the body.
In conclusion, the respiratory system is very important to the body. We would not be able to function properly or even live. This system also is the main part and only part that supplies air to your whole body.
Digestive System
The digestive system plays a very important role in the body. It is a group of organs that convert food into nutrients to provide nutrients to the whole body. You need everything in the digestive tract except the gall bladder because if you didn’t have all of these organs, the body wouldn’t be able to get any nutrients or it wouldn’t be able to get rid of things the body does not need.
Also known as the oral cavity, the mouth is a very important part of the human body. The mouth is a hollow cavity that allows you to be able to breathe and eat. The mouth contains teeth, tongue, and the salivary glands. All of these work together in the mouth. The mouth also plays a major role in speech because of the movements of the tongue, lips, and cheeks. The teeth also play a major role in the mouth since their job is to rip and tear the food apart so that it can go down our throat without us choking. There are two rows of teeth and 12 molars. The incisors and canine teeth do most of the ripping, gripping, and tearing. Mechanical digestion involves the ripping and the tearing of the food. It is also in charge of ripping it into very small pieces and getting the nutrients partially out. Saliva plays a very important role of breaking the food down so we can eat it. Saliva makes sure that the dry crackly food becomes soft and moist so that it is easier to eat and swallow. Chemical digestion involves the breaking down of the food and removal of the nutrients necessary for the cells. Chemical digestion begins in the mouth when it mixes with the saliva and it carries down to the stomach. The tongue is another one of the many organs in the mouth. The tongue consists of 8 interwoven and striated muscles. These muscles can move in many different directions which makes the tongue very flexible. The tongue also consists of many taste buds that enable you to be able to taste your food. One more job of the tongue is that it rolls your food up into a ball so it is easier to go down your throat. Once the teeth are done chewing your food, the tongue forms it into a bolus. The bolus is a ball of food that is mixed with your saliva, enzymes, and mucus that help break down the food so it is easier to swallow.
As a person swallows, the food travels down the throat through the trachea and to the esophagus which goes down to the stomach. The esophagus is usually 25 to 30 centimeters long and 1.5 to 2 centimeters wide. The esophagus is hollow so that food, saliva, and liquids are able to go down to the stomach. As the food is traveling down the esophagus, a maneuver happens called peristalsis. Peristalsis is almost like a massage, it is where many muscles work together and contract to push the food down to the stomach. Without the peristalsis, the food would not be able to get to the stomach and we would not get any food. There is also reverse peristalsis which is throw up. If your body does not want something in the stomach, it turns on reverse peristalsis which sends the food back up.
The food travels down the esophagus while peristalsis sends it down to the stomach. The stomach is an elastic j-shaped pouch. The stomach is hollow so that food and liquids are able to sit in there while it is digesting. This organ is very cool because it is able to expand to fit different amounts of food. The stomach measures about 12 inches long so it can fit next to the liver. The stomach is big enough to easily hold one liter of food and liquids. Inside the stomach, there are many digestive juices. These juices are from the glands in the lining of the stomach. Most of the juices that the glands produce are acids and enzymes. These juices are very important to the stomach because they break down the fat and carbohydrates in the food so that it is easier to digest. Chyme is a partially digested piece of food that is forced into the small intestine. Chyme has a low Ph balance which means that it has many acids. This makes it easier for the food to be digested.
The food comes into the small intestine from the stomach. The food starts as semi solid sludge when it goes into the small intestine and when it comes out and goes into the large intestine, it is very watery. The small intestine is very long so it can keep taking the nutrients out of the food. The small intestine is about 6 meters or 20 feet long. Villi lines the small intestine that absorbs nutrients for the blood cells. The villi also contain small specialized cells that transport nutrients to the blood. The small intestine has one main job and that is to absorb nutrients passing in the blood stream. The nutrients are very important to our body because we need nutrients to be able to survive.
Tubes carry enzymes from the pancreas to the small intestine. The pancreas produces juices called enzymes that help digest food. The pancreas also produces hormones that control some activities in the body. The enzymes in the pancreas contain an active ingredient called pancrelipase which is a mixture of different digestive juices that help the body to be able to digest the food easier. The pancreatic enzymes have three different ingredients that help digest food: amylase, lipase, and protease. All of these ingredients are one of the main parts that break down the food in the body.
The liver cells produce bile. All of the bile flows into small channels called canaliculi. All of these small channels drain into bile ducts, all of the bile ducts form together to form larger ducts to eventually form the left and right hepatic duct. The common hepatic duct connects with another duct which connects to the gall bladder. The gallbladder is a small pouch that sits right under the liver. Before a meal, the gallbladder is usually large, about the size of a small pear because it is full of bile. But then after a meal, the gallbladder is flat like a deflated balloon. When there is food or bile, the gallbladder responds and squeezes stored bile into the small intestine through ducts. The gallbladder is not essential, you can get it removed usually without any problems. Bile is a yellow-green fluid that is produced by the liver and is stored in the gallbladder. After it reaches the gallbladder, it passes through the common bile duct and is stored in the duodenum to help digest fat.
The large intestine is the final section of the gastronomical tract. The large intestine’s job is to absorb any final water or vitamins and convert them to human waste. The large intestine is smaller in length than the small intestine and it is considerably larger in diameter. The large intestine is about 5 feet in length and 2.5 inches in diameter. The large intestine gets much larger as the smooth muscle tissues of the intestinal wall relax. Most of the body's water is absorbed by the inner lining of the small intestine. The small intestine is very long which makes it easier to absorb a lot more water. The small intestine is very long but it can absorb the water very quickly as well. All of the water that the small intestine gets goes right into the bloodstream and is used for many different organs.
The end of the digestive tract is the anus. It is an opening that enables human waste to leave the body. The anus is formed partially from surface layers, including skin and partly of the intestine. The anus is lined with continuation of the external skin. The anus has a muscular ring so it is able to open and close to keep in human waste or get it out.
In conclusion, the digestive system is a very important part of the body. It is in charge of getting all of the nutrients we need and to get rid of the stuff we don't need. It also controls all of the enzymes and many digestive juices that help us break down food so we can digest it better.
Nervous System
The nervous system consists of brain, spinal cord, sensory organs, and all of the nerves that connect all of these organs to the rest of the body. Together, all of these organs are in charge of making sure that you can feel things and making sure that everything in your body is working right. All of the the neurons in the body transmit signals all through the body to make sure things are working like when you are walking and talking.
The brain is the control center to the whole body. It is in charge of making sure that all of the things in the body are working correctly. This is the main thing that sends neurons all through the body and maybe going down to the leg and telling it to walk. The brain consists of 4 different sections and each section is in control of a different part of the body. The cerebrum is the most important region of the brain. It is in charge of the memory and the sensory integration. It can influence the functions of the bottom part of the brain. The cerebrum is also in charge of the seat of region and the planning of the things that the body does. Then, the cerebellum is one of the most recognizable parts of the brain due to the unique shape and where it is placed. It is very important because it is the part of the brain that controls most of the things you do everyday such as walking and writing. The cerebellum is also incharge of balance and if you get your cerebellum damaged you would not be able to balance, stand, and you may even die. In addition, the cerebellum also controls most of your muscle coordination and your muscles would not work properly without this part of the body. The brainstem is the the tube like structure at the bottom of your brain. The brainstem is in charge of sending messages through the spinal cord and down to all the parts of the body telling it what to do. The brain stem also controls some of the most important things that the body does such as breathing, swallowing, heart rate and it tells you if you are either awake or sleepy. One more thing that the brainstem controls is that it coordinates with the heart and lungs telling them what to do and if something is wrong with them. All of these parts of the brain are some of the ways that keep the body working and make sure everything is going correctly in the body.
The nerves serve a very important role in the body. When you stub your toe, the nerves in the foot send a signal up to the brain telling your mouth to say THAT HURT! The nerves are also partially in charge of keeping the body in balance and making sure you don't fall over or hurt yourself. Sensory nerves send signals all through the body such
as feeling, sight, and sound. When you feel something, your sensory nerves send a signal up to the brain which sends a signal to the eyes which tells the eyes to look to see what you are feeling. They also send information all through the body and send them through the spinal cord and to the brain. The main function of the motor nerves is to send signals from the brain, through the spinal cord and down to any muscles telling the legs to walk or the arm to lift a heavy object up. If you hurt any of these nerves or damage them, you could end up have muscle spasms or have cramps in your arms and legs or even muscle weakness. Like your brain, your spinal cord is very important. It sends signals all through your body and is making sure everything in your body is working correctly and that everything is going correctly outside of your body. There are 31 pairs of spinal nerves in your spinal cord connecting it to the rest of the body and sending signals through your body and up to your brain. Neurons are nerve cells, they are the fundamental part of the nervous system. Their job in the body is to get signals and make the signals go to different parts of the body telling that part what to do or what the problem is. The neurons are designed to send signals very fast through the body and send them very fast throughout long distances. What the synapse contributes to the body is that it sends information all through the body. The information can be sent from nerve to nerve or even nerve to muscle. One more thing that the synapse does for the body is that it makes sure information is being sent through the body at all times. Dendrites are one of the main parts of a neuron. Dendrites are the structures that are on top of the neurons that receive messages and then send them through the body. The messages that the dendrites revive come in two different forms: excitatory and inhibitory. One more thing about dendrites is that the neurons need something to keep them active or else they will not work. The dendrites job is to find that active thing and send it to all the neurons in the body. The purpose of the axon is to send electronic chemical signals all through the body and to send them to the neurons. These nerves have to be active because they sometimes send signals very far throughout the body. The neurons in you legs and feet have axons and they can get up to about three feet long.
The five senses are very important to the body. If one of your senses does not work like if you were blind, it would be hard for your body to know what is happening around them or where they are. Sight is very important to our body. It makes sure that we are able to see at all times and to make sure we don't bump into something and get hurt. The sense of sight begins when different photon cells from the world hit the lense of our eye which goes to the retina. Once the image goes through the retina, it travels through different nerves which sends the signal up to the brain telling us what is going on outside the body. Another one of the major senses is hearing. The way this sense contributes to the body is how we are able to hear what is going on on the outside of the body. We are able to hear if there is a train coming or even hear the whistle blow at your hockey game. The sense of hearing starts when different sound vibrations are heard by the ear and are processed and then turned into different words or sentences. The signals are transmitted and sent to the brain through neurons telling you how to respond or not say anything at all. Your sense of taste serves many purposes in the body. It helps you chew, swallow, talk, and sing. Your tongue is made up of many different muscles. Each muscle helps the tongue flex and move the food around in your mouth. The tongue has over 10,000 taste buds and each one helps you taste what you are eating. Taste is very helpful because you could be eating a raw chicken which could give you salmonella but you would be able to taste whether it is or not. The front of you tongue has more taste buds then the back of the tongue so you can taste the food before it is chewed up and turned into bolus. The sense of taste is very useful and you use it everyday. The sense of smell is very important as the rest of the senses because you are able to smell the delicious food you are about to eat or smell the smoke from a fire. The sense of smell is able to detect different odors in bad situations like a fire. The main job of the nose is to smell. It is very cool how the body is able to smell things when our sense of hearing or sight is not working like if we were in a dark room with headphones on. The final sense is the sense of touch and this helps us to be able to feel what we are standing on or to feel the railing on the stairs. Our skin contains many different tiny nerve endings that creates our sense of touch. You are able to feel if there is pain or if you are touching something very hot or very cold. The bottom layer of the skin is called the dermis which sends a signal to the brain telling us what we are touching and if we should get away from the thing like fire.
In conclusion, this is the last system in the human body. This system contains all of the senses and all of the communication throughout the body. The spinal cord and the brain both send signals throughout the body. The signals go through the spinal cord and goes to the brain telling the body how to react. There are many different nerves in the nervous system and each kind of nerve is in charge of sending a different signal through the body. This system does not have as many parts to it as the other system but every single part is very important to the body and each one helps send signals throughout the body making us aware of everything around us.
Conclusion to the Human Body Research Paper
In conclusion, the human body has many systems that each work hard to do specific jobs to benefit our bodies, but they also work together successfully to ensure our well-being. The skeletal system provides support, protection and structure while the muscular system allows us to move, breathe, and digest food. The circulatory system transports oxygen and nutrients to the cells of our body while getting rid of waste products and the respiratory system swaps out the oxygen and carbon dioxide. Finally, the digestive system converts food into energy while the nervous system uses that energy to make decisions and maintain memories. I appreciate the time you took to read these essays and hope that you learned something valuable. So the next time you move a muscle or take in a breath, I hope you’ll think about how impressive our human body really is!
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