Coronary circulation is a physiological mechanism wherein arterial ostia within the aortic sinuses supply the myocardium via specific branching patterns adapted to cardiac mobility through tortuosity. The left coronary artery bifurcates into the Left Anterior Descending (LAD) and Circumflex arteries, while the right coronary artery extends posteriorly as the Right Posterior Coronary Artery and Postero-Descending Artery; these structures supply defined territories of the ventricles, septum, conduction bundles, and nodes based on dominant vascular dominance. This anatomical architecture defines perfusion limits for myocardial tissue, where occlusion frequency varies hierarchically among branches to produce ischemic necrosis and fibrotic replacement within specific coronary vascular beds.
Cardiac perfusion and venous return follow a defined anatomical structure: the heart is supplied by two main coronary arteries (with the left dividing into two branches, yielding three functional ves…