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The Skeletal System Teacher Pages. The adult human skeletal system has 206 bones that provide support, protection and shape to the body. It also has other important but lesser known functions that allow the body to store minerals, make blood cells, and grow. Bone Structure. The structure of bones allows for strength.
The skeleton provides mechanical protection for many of the body's internal organs, reducing risk of injury to them. For example, cranial bones protect the brain, vertebrae protect the spinal cord, and the ribcage protects the heart and lungs.