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Why do we need a skeleton?
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The skeleton is the body's framework. It is made of bones, which provide a firm surface for muscles to attach to, so that they can move. Without a skeleton, we would not be able to move at all. The skeleton also supports the body and protects our internal organs. The heart and lungs are protected by the rib cage, and the brain is surrounded by the bones of the skull. The nerves leading from the brain are protected by the backbone.
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Previous:
Back
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Book:
1001
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Section:
Human World
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Chapter:
Human Body: Systems
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