Clavicle

the clavicle or collar bone is a long bone of short length that serves as a strut between the scapula and the sternum.   It is the only long bone in body that lies horizontally. It makes up part of the shoulder and the pectoral girdle and is palpable in all people, and, in people who have less fat in this region, the location of the bone is clearly visible as it creates a bulge in the skin.

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