Veins that return blood directly to the heart include the ________.

A) brachiocephalic vein
B) superior vena cava
C) portal vein
D) azygos vein
E) pulmonary arteries

Superior Vena Cava

Vein that returns blood from the head and neck, upper limbs, and thorax to the right atrium.

Directly

In a straight line or manner without any intervening space or substance.

Heart

A muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system.