The function of the small cardiac vein is to retrieve blood from the vascular tissues of the heart and drain them into the coronary sinuses, according to anatomyExpert. This process ensures that the heart pumps blood to the body properly.
The small cardiac vein is located on the right side of the heart, between the right ventricle and right atrium, anatomyExpert states. Smaller veins running along the right side of the heart join onto the small cardiac vein, making it a vital piece of cardiac anatomy. The absence of a small cardiac vein can cause serious health issues, states the Medical Radiology Journal.