The skeletal system is composed of 206 named bones divided into two main groups: the axial skeleton and the appendicular skeleton.
The axial skeleton forms the central axis of the body and is made up of the cranium, vertebral column, ribs, and sternum. It functions to protect the internal organs and to provide a site of attachment for the limbs.
The appendicular skeleton consists of the bones of the upper and lower limbs and the pectoral and pelvic girdles.
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