View random article

What Is the Collar Bone?

The clavicle, more commonly known as the collar bone, is a narrow bone and short bone which extends across the upper portion of the chest. Just below the throat the collar bone is connected to the top of the chest bone, technically known as the sternum, and at the both shoulders is connected to the acromion process of the scapula. A chicken’s “wish bone” is generally the same shape as the collar bone. Since the collar bone is located above the shoulder joint, or the technical glenohumeral, the range of motion available to this joint is increased.

Since the collar bone is positioned relatively near to the skin, this is because there is not much muscle or fat located between the collar bone and the skin. This proximity to the surface and because it is composed mostly with spongy bone makes the collar bone quite susceptible to injury. Injuries to the collar bone are usually factures or dislocation at the shoulder joints. Causes for these injuries could be relatively sudden and high impact or awkward form in falling, which is not uncommon to those engaged in high activity sports and in infants and pre-adolescent children whose bone structures are not yet conditioned or strengthened to sustain that which regular humans are able to withstand.

Multiple muscle that are responsible for move the shoulder blades and arms are connected to the collar bone. Of these muscles those that are attached to the upper portion of the collar bone are the deltoid and trapezius muscles. The detoid muscles are prominent shoulder muscles that are responsible for raising the arm from the body. The trapezius are large muscles used in executing the shrugging action of the shoulders.

Featured in Health