What is "subclavian vein"?

The subclavian vein is a major blood vessel located in the upper body that plays a crucial role in the circulation of deoxygenated blood. It begins at the outer edge of the collarbone and extends toward the heart, merging with other veins to form the superior vena cava. The subclavian vein receives blood from the arms, shoulders, and chest, and serves as a conduit for the return of deoxygenated blood back to the heart for oxygenation. It is an essential component of the circulatory system, aiding in the efficient transport of blood and maintaining the overall function of the body.