The human skeletal system consists of 206 bones that provide structure, protect organs, allow movement, and produce blood cells. Key components include the sternum, 24 ribs, 26 vertebrae in the spinal column, 60 bones in each hind limb, 4 bones in the pectoral girdle, and 2 bones in the pelvic girdle. The appendicular skeleton contains 126 bones in the limbs and girdles.
