Answer
In general, the superior vena cava drains the upper regions of the body, while the inferior vena cava takes deoxygenated blood from lower areas of the body to the the heart.
Work Step by Step
The coronary sinus also carries deoxygenated blood to the heart. It receives blood from the coronary veins of the myocardium and delivers it to the right atrium. The venae cavae also deliver blood to the right atrium
