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walking,running, settle into a chair,hug your child,and riding a bike
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| Give an example of what you can do to move your bones |
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| The skull protects the brain and forms the shape of our face. |
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| a pathway for messages between the brain and the body, is protected by the backbone, or spinal column. |
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| form a cage that shelters the heart, lungs, liver, and spleen, and the pelvis helps protect the bladder, intestines, and in women, the reproductive organs. |
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| has 206 bones, which begin to develop before birth. |
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| is when the cartilage is replaced by hard deposits of calcium phosphate and stretchy collagen, the two main components of bone. It takes about 20 years for this process to be completed |
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| called growth plates, these plates consist of columns of multiplying cartilage cells that grow in length, and then change into hard, mineralized bone. |
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