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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 >.
1 Bones, cartilage, and ligaments make up the skeletal system. 2  The skeleton supports the body against the pull of gravity. 3  The skeleton provides a framework that supports and protects the soft organs of the body. 4  Bones work together with muscles to move the body. 5  Blood cells are mostly made inside the bone marrow.unctions of Bones Your skeletal system gives shape and form to your body, but it is also important in maintaining homeostasis. The main functions of the skeletal system include: Support. The skeleton supports the body against the pull of gravity, meaning you don't fall over when you stand up.