Location:
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.

Function:
This cardiac vein returns deoxygenated blood (metabolic waste products) from the anterior surfaces of the left ventricle.

Other Nomenclature:
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.