Definition : Large veins on either side of the root of the neck formed by the junction of the internal
jugular and subclavian veins. They drain blood from the head, neck, and upper extremities,
and unite to form the superior vena cava. [MeSH];
Large veins on either side of the root of the neck formed by the junction of the internal
jugular and subclavian veins. They drain blood from the head, neck, and upper extremities,
and unite to form the superior vena cava. [MeSH]