What is the Subclavian Vein?
The subclavian vein is a major vein which drains blood from the upper extremities and returns it to the heart. There are two subclavian veins, the right and left subclavian veins, and as the name of this vein would imply, they run under the clavicle, also known as the collarbone. Like other major veins in the body, these veins are critically important to healthy functioning of the body, and conditions which interfere with the left or right subclavian veins are treated very seriously.
