![]() There are 126 bones in th appendicular skeleton: 60 in the upper extremities, 60 in the lower extremities, 2 in the pelvic girdle, and 4 in the shoulder girdle.Įach of these 206 bones consists of three layers: the bone marrow, compact bone and the periosteum. There are 8o bones in the axial skeleton, consisting of the skull, spine, ribs and and sternum. The skeleton consists of the axial and appendicular skeleton.
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