Morphological variation and dimensions of left coronary artery: a cadaveric study

Abstract

The heart is supplied by two coronary arteries (left and right) and their branches, which are located between the epicardium and myocardium. The right (RCA) and the left coronary arteries (LCA) arise from the aortic sinus of valsalva at the root of the aorta and encircle the base of ventricles like a crown.1 The LCA is responsible for irrigation of most of the left ventricle and also a considerable proportion of the right ventricle.2 It lies between the pulmonary trunk and the left atrial auricle, emerging into the atrioventricular (AV) groove, in which it turns left. Reaching the atrioventricular (AV) groove, the LCA usually divides into two main branches: left anterior descending (LAD) and circumflex artery (CA).3