Both sides of the neck have one of each type. The jugular veins allow blood to move from the head to the superior vena cava, the largest vein in the upper body. The superior vena cava then ...

Medically reviewed by Jeffrey S. Lander, MD The inferior vena cava (also known as IVC or the posterior vena cava) is a large vein that carries oxygen-depleted blood from the torso and lower body to ...