- They allow us to stand up tall
- They protect our organs
- They allow muscles to move our body
- Joints are where two or more bones meet and this is where movement acours
- fixed joints don't allow movement
- Hinge joint acts like a door and can only go up and down by it's self
- Knuckles,elbows, and knees are hinge joints
- Ball-and-socket joints are where one joint is shaped like a ball and the other is shaped like a socket around it
- The ball and socket joints are hips and shoulders
- Pivot joints are including neck,ankles and wrists
- Kids have more bones than adults
- Cardelige never becomes bone is certain spots
- The middle of the bone is like jelly and carry's blood cells
- If your bone was fully solid you would weigh 500 lbs.
- Thee are pockets of air in the middle of the bone
- There is something like paper on the outside of the bone
- Our skeleton protects a few of our organs
- Bones don't move but muscles pull the bones at joints
- The spine bends in and out like an "S"
- You make more cells when you grow
- Cells are all blood on the inside
What do bones do?
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