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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 bones have a hollow shaft down the middle which consists of a substance called bone marrow, which is basically an important energy source for our body. One of the main functions of the skeletal system is to provide a framework to our bodies, without which we would be a heap of skin, organs, blood vessels etc. The main skeletal system is divided into two parts: The Axial Skeleton. This part consists of 80 bones.