vena - a blood vessel that carries blood from the capillaries toward the heart; all veins except the pulmonary carry unaerated bloodaccompanying vein, vena comitans - a vein accompanying another structure; a vein may accompany an artery in such a way that the arterial pulses aid venous return angular vein, vena angularis - a short vein formed by the supraorbital vein and the supratrochlear vein and continuing as the facial vein azygos vein, azygous vein, vena azygos - one of a system of veins that drain the thoracic and abdominal walls; arises as a continuation of the right ascending lumbar vein and terminates in the superior vena cava basal vein, vena basalis - a large vein passing along the medial surface of the temporal lobe and emptying into the great cerebral vein cardinal vein - any of the major venous channels in primitive adult vertebrates and in embryos of higher vertebrates |