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The skeletal system supports and protects the body while giving it shape and form. This system is composed of connective tissues including bone, cartilage, tendons, and ligaments. Nutrients are provided to this system through blood vessels that are contained within canals in bone.
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.