Venae cavae

The superior and inferior venae cavae are the veins that return the blood from the body into the heart. They both empty into the right atrium[?].

The inferior vena cava travels up alongside the abdominal aorta with blood from the lower part of the body.

The superior vena cava is above the heart, and forms from a convergence of the left and right brachiocephalic veins that contain blood from the head and the arms.