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...
The muscular system helps the human body move around and have fun. Our muscles make up over half of our body weight and give our body tone and shape. And that is is a lot of weight! Let’s say you want to move your arms around, eat a sandwich, or run, you use muscles! There are many different types of muscles and they all have different purposes (e.g. movement, pumping blood, dilating your pupils). some of these purposes are controlled by us, while others are controlled automatically by the muscle cell or the brain.
The muscular system is a powerful system that allows us to move, convert food into energy, and circulate blood throughout our body. Our muscles make up over half of our body and give body tone and shape. In the next essay, learn how some of these muscles move blood throughout our body in order to deliver oxygen to all of our cells.
There are two types of categories of muscles in the human body; voluntary and involuntary. Voluntary muscles are muscles that we have control over. They are the muscles that controls our body's movements and are attached to bones. Skeletal muscles are the only type of voluntary muscle in our body. They pull on bones to cause us to move. Skeletal muscles never push, they only pull, and that’s why they are nearly always found in pairs. One example of this is the biceps and triceps that are located in our upper arms. When the biceps want to pull the lower arm, they contract or shrink while the triceps relax or expand. When the triceps want to pull the arm down,they contract while the biceps relax. This is an example of a pair of muscles working together to make movement. But those muscles wouldn’t be able to do any of this without tendons connecting to the bones that they move! Tendons are flexible bands of tissue that connect muscle to bone. They blend into bones and enable them them to move the bones that they were supposed to move. Although skeletal muscle are the only type of voluntary muscles, there are two types of involuntary muscle.
Unlike voluntary muscles, involuntary muscles do things automatically without us knowing it. There are two examples of involuntary muscles, cardiac muscle and smooth muscle. Cardiac and smooth muscles are similar because they work automatically by themselves. Cardiac muscles are muscles that are found only in our heart, and are responsible for pumping blood throughout our body. They work without us thinking about them, and they contract and relax throughout our entire lives. Smooth muscles are found inside many of our organs (e.g. intestines, esophagus, stomach) and bladder and help you move food through our body. Smooth muscles are also found in your eyes and your blood vessels. Smooth muscles may look like one big cell, but are actually a bunch of smaller, smooth cells all grouped together. So clearly, there are many types of involuntary muscles in our body that do things we had no idea about, including important tasks like pumping blood and digesting food!
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 organs like our heart and our brain! Our bones even make and store blood cells for our circulatory system! Without bones we would be more that a pile of skin organs and muscles on the floor. We would not be able to move, 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 strong and dense. The next layer of bone is called calculus (spongy bone). This bone allows us to be lightweight and transitions from compact bone into bone marrow. Bone marrow is a thick and spongy section in the middle of a bone where red and white blood cells are formed. Finally our bones our all covered in a thin membrane called petrositium which is where are muscles attached to bones. So that is how bones our structured in order to keep our bodies strong yet lightweight.
although our bones are extremely important, We wouldn’t be able to move with out joints! Joints are places where two 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 joints. just like hinges on a door they allow us to move back and forth. We have hinge joints in our elbows and knees. Another type of joint is called a ball and socket joint. This is where a bone has a ball at the end of it and the other one has a socket, like baseball mitt for the ball to sit in. Our shoulders and hips are an example of ball and socket joints.
Another type of joint is called a gliding joint. A gliding joint is two or more joints that slide past each other. Our wrists and ankles are examples of gliding and sliding joints. The last type of joint is called a 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 against one another, which would be painful. This material is called cartilage. Cartilage, which is bendable, can also be found in our ears and our nose. But all of the amazing movements that are body does 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 bone to bone and stabilize joints. Without these ligaments in place, bones wouldn’t stay attached to each other and wouldn’t allow joints to move. It is interesting to note people who are double jointed just have extremely stretchy ligaments! Without ligaments we’d have a hard time getting around our world!
Bones are definitely an important part of the human body. They allow us to move, help us provide structure and support, protect our important organs, and even make blood cells! Because our bones are designed so well they are extremely strong yet lightweight! Thanks to joints, ligaments, and cartilage we are able to bend and move throughout our world.
The circulatory system is a powerful system that allows us to circulate blood throughout our body. In the next few paragraphs, learn how the circulatory system moves blood throughout our body in order to deliver oxygen to all of our cells, and keeps us healthy.
Your heart is the most important part of your body. If you didn’t have your heart beating even for just a few minutes then you you would die! Your heart is meant for pumping blood so the blood can spread throughout your body. There are four main parts of your heart, they are the right atrium, the left atrium, the right ventricle and the left ventricle. They're also known as the four chambers. The left atrium is what receives the oxygen rich blood from your lungs and your arteries and transports it to your left ventricle. The right atrium takes in all of the oxygen poor blood that is in your body and delivers it to the right ventricle which transports it to your lungs. The left ventricle is meant for pumping blood and sending it through your body except for your lungs. The right ventricle transports all the oxygen poor blood it to your lungs so your lungs can release the carbon dioxide. Carbon dioxide is one of the waste products of our body.
Next we have our cells. There are white blood cells and red blood cells. White blood cells help the immune system fight off all the germs in our body. They also prevent viruses and bacteria from spreading throughout our body. There are many types of white blood cells and they are all equally important. Each blood cell is trained to prevent different germs that make you sick. Even though they only make up about one percent of our blood, they make a big difference in our body. Without these cells, think of all of the problems that could happen to your body! White blood cell don’t live forever, so your bone marrow produces more cells. Some white blood cells have a lifespan of only one to three days which is not a lot of time. Without these white blood cells we would be sick very often, which is never good!
White blood cells are very important, but just as important are the other blood cells such as red blood cells. Blood carries red blood cells and red blood cells carry oxygen. The red blood cells travel to your lungs and they pick up the oxygen there.The next place to travel to is the heart so the heart can deliver the oxygen to your whole body.
If you fall down and get a cut on your hand you would see a red liquid coming out. This liquid is called blood. Blood can help us cure these cuts. In your blood you have platelets. Platelets are what you see when your cut is all dried up. It is also known as a scab. There are two types of blood. Poor oxygen blood, and rich oxygen blood. The rich oxygen blood comes from your arteries, and your poor oxygen blood comes from your veins
Veins and arteries are like little carriers that carry your blood. Some of your veins and arteries pop outside your skin and some stay inside. They are like narrow tubes or pipes that water flows through when you turn on a faucet. Veins and arteries are very important.
The Circulatory system gives us many special abilities such as circulating blood throughout our body, and even fighting off new viruses that are introduced to our body.
The respiratory system is a very important part of the human body. It’s main purpose is to help you breathe but it can help with other things as well. The respiratory system is a very unique part of the human body. If you read the next few essays you will find out why.
There are many parts of the respiratory system they are the nasal passage, mouth and nose, larynx, epiglottis, trachea, voice box, vocal chords, alveoli, bronchioles, and the lungs.
The epiglottis is a small cartilage "lid" that covers your windpipe, blocking the flow of air into your lungs. It makes sure that when you breathe in air it doesn’t go where your food goes. Without your epiglottis, you would cough every time you try to eat your food.
Next there is your trachea. It is like a tube that leads straight up to your larynx, but then the lower part of the trachea splits to become a bronchi. These tubes are made up of little rings. The trachea has elastic tissue between the cartilage rings.
Your lungs help you breath. You can think of your lungs as giant balloons because when you breath in, your lungs get bigger and when you breath out your lungs get smaller. Breathing air is necessary for keeping humans alive.
The larynx is a tube-shaped piece of cartilage. it is located in your throat. it is the fancy word for voice box. It works together to let you talk, whisper, sing, and yell.
When you inhale air through your nostrils, the air enters the nasal passages and travels into your nasal cavity. You can breathe through your mouth as well.
Just as important as your nostrils we have your voice box and vocal chords, When your voice is changing your voice box actually gets bigger. Your voice also starts to crack. Not only does your voice box help you sing but it also helps you talk, which is important.
Your alveoli works to form space in your lungs for efficient gas exchange. Efficient gas exchange is the process of transferring oxygen from the air into your blood, and extracting carbon dioxide from your blood and releasing it into the air.
The respiratory system is one of the many important systems in our body. The respiratory system is so important because it gives us big abilities that we need in order to live, like breathing. And it also gives us very small abilities such as singing or humming your favorite song. The respiratory system makes a very big difference in our body.
The Digestive system is a very important part of the human body, it helps us eat, swallow and even get the nutrients out of food! The Digestive system is well known for digesting food and converting food into energy, which is an important job to have. There are many parts of the Digestive system. They are the tongue, mouth, teeth, intestines, esophagus, saliva, bolus, the process of peristalsis, stomach, chyme, digestive juices, vili, bladder, pancreas, liver, and bile.
The tongue, is really important. It helps us talk, sing and even eat an icecream cone! The tongue is very flexible and bendable and it pushes your food to your teeth. The tongue is covered with tissue called mucosa, which is a rough scratchy material.
Just as import as the tongue there is saliva which helps keep your mouth moist. It is the fancy word for spit. It helps break up your food even before it all goes into your stomach. without it, our mouth would be so dry that it would probably bleed every single day!
Next we have your mouth. Your mouth holds your teeth and your tongue. When you eat your food, the mouth is the first place that the food goes. The whole process of the digestive system can’t start without you putting your food in your mouth!
Then the esophagus comes in and swallows your food. The esophagus is like a stretchy pipe that's about 10 inches long Then it’s going to bring it down to the the stomach
Now the stomach mashes it up even more, and digestive juices help break it down. So it becomes something called chyme. You can imagine the stomach as a big bag that squishes up you food.
Next the intestines suck out all the nutrients in the chyme, because we need a lot of nutrients in order to live. Without these we would not be able to stay healthy.
When you swallow food, it doesn't just drop down into your stomach. Muscles contract in a wave motion to move the food along through the digestive tract. It’s called peristaltic waves. The waves contract behind the food bolus pushing your food along the digestive tract. Your food bolus is the tiny balls of food you chew.
The digestive system is an important part of the human body. Without it we would not be able to eat or digest our food. I if we can not digest our food or eat it then we would not be alive right now! The digestive system does very good things for us and it is important that we know how it works.
The nervous system is an important part of the human body. Say that you want to walk to school or high five your friend, your nervous system helps you do that. Your brain is the main part of the nervous system. It tells your body what to do and your body does it. There are many parts of the brain, they are the Cerebrum, Cerebellum, and Medulla. Some other parts of the nervous system are the sensory nerves, motor nerves, synapse, neurons, dendrites, and axons.
The brain is the most important part of the nervous system because it controls everything that we do, and it even works when you are asleep. In your brain the cerebrum makes up eighty five percent of your brain, it is the part that helps you think. The cerebellum helps you maintain balance, and it give you the the ability to move. The medulla helps get messages from your brain to your spinal cord which tells you to move. All of the parts of the brain are unique in different ways, and they help the brain function. All of these jobs that different parts of the brain do are very important and we definitely would not be able to survive without them.
Almost as important as the brain are the nerves. Your nerves are like wires that send signals from the brain, but not only that, they can send signals to the brain.
One type of nerve is your motor nerve and it tells your body what to do. Say that you touch the stove, your hand would hurt! So your motor nerves realize that and they tell the brain to pull your hand away from the stove. Without these we wouldn’t know if we are hurting our body or if we are not, which would be very bad!
Unlike the motor nerves the sensory nerves helps send signals to your brain, not from your brain. It sends information to your brain such as sight, sound, and feelings.
Next we have our axons. An axon is a long fiber of a nerve cell that carries messages. Axons transport the messages from one axon to another until the message reaches the brain.
Your neurons are very important. There are about one hundred billion neurons in your brain. All your neurons are very important. Neurons are tiny little nerve cells and they help carry messages too.
The nervous system is very interesting to learn about. Everything that you feel, see, hear, and smell is all because of the nervous system. Without the nervous system we would not know anything.
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!
Biblyography
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