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The four primary functions of the skeletal system are to support muscles and tissue, protect the vital organs, allow movement of bones and muscles and serve as the storage center for immature blood cells and minerals. The skeletal system has 206 bones that are vital to the human body. Full Answer >.
The skeletal system is the body system composed of bones and cartilage and performs the following critical functions for the human body: 1  supports the body. 2  facilitates movement. 3  protects internal organs. 4  produces blood cells. 5  stores and releases minerals and fat.