At its lateral end it articulates with the acromion of the scapula (shoulder blade) at the acromioclavicular joint. Medially, it articulates with the manubrium of the sternum (breast-bone) at the sternoclavicular joint. The clavicle is a doubly-curved long bone (the only horizontal long bone in the human body) that connects the arm ( upper limb) to the body ( trunk), located directly above the first rib. Left clavicle - from above, and from below.
Right clavicle - from below, and from above. In some people, particularly females who may have less fat in this region, the location of the bone is clearly visible as it creates a bulge in the skin. (This movement is palpable with the opposite hand). It receives its name from the Latin clavicula ("little key") because the bone rotates along its axis like a key when the shoulder is abducted. In human anatomy, the clavicle or collar bone is classified as a long bone that makes up part of the shoulder girdle ( pectoral girdle). Template:Infobox Bone Editor-In-Chief: C.
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