The RCA runs through the atrioventricular groove ... Besides the main stem, the left anterior descending artery (LAD), left circumflex artery (LCX), and intermediate (IM) and diagonal branches ...

The left main coronary artery arises from the left coronary cusp and bifurcates into the left anterior descending (LAD) and the left circumflex coronary arteries. Since the left main supplies a ...