Coronary Arteries and Sulci of the Heart

In this video, first, I will explain the auricles of atria and the sulci (coronary sulcus, anterior interventricular sulcus, posterior interventricular sulcus) on the external surface of the heart. Then, I will explain the main branches of the left and right coronary arteries, the part of the heart that is supplied by each branch. At the end, I will describe how, after blood becomes deoxygenated, it gets into the coronary sinus, which empties the deoxygenated blood into the right atrium.