The distal portion of the coronary sinus commonly narrows to form the great
cardiac vein. In most human hearts we have observed valves of Vieussen
covering the ostium of the great cardiac vein.
This cardiac vein returns deoxygenated blood (metabolic waste products)
from the anterior surfaces of the left ventricle.
The section of the great cardiac vein that courses anteriorly in between the
left and right ventricle is also known as the anterior interventricular vein.