Coronary Blood Vessels of the Male Heart, Posterior View

Description

Posteriorly, the cardiac base is framed by the left atrium superiorly and the left ventricle inferiorly, with the great vessels clustered at the superior aspect where the ascending aorta transitions toward the arch. Along the atrioventricular (coronary) sulcus, the right coronary artery courses toward the crux of the heart and gives rise to a posterior interventricular (posterior descending) branch that descends in the posterior interventricular sulcus toward the apex. On the left side, the circumflex branch of the left coronary artery tracks laterally within the left atrioventricular groove and sends obtuse marginal branches onto the posterolateral left ventricular wall. Coronary venous channels run parallel to these arterial conduits, collecting into the coronary sinus along the posterior atrioventricular groove. This posterior perspective matters because it centers the crux and posterior interventricular region, the territory used to define coronary dominance and to predict which conduction structures are at risk when the right coronary artery or circumflex is compromised. Inferior and posterior myocardial infarction patterns often reflect occlusion of the posterior interventricular artery, and this is also the neighborhood for atrioventricular nodal ischemia and bradyarrhythmias. It is a practical map for correlating ECG inferior lead changes with culprit vessel anatomy. Use it in gross anatomy and cardiovascular blocks when teaching coronary sulci, dominance, and venous drainage into the coronary sinus, or in interventional cardiology and cardiothoracic surgery materials describing right coronary artery lesions, posterior STEMI, and bypass graft targets to the posterior descending or obtuse marginal branches. Suitable for textbooks, journal figures, cath lab patient education, and operative planning visuals where a clean white-background posterior heart view reads well in print and slides. Anatomical accuracy verified by SciePro's Medical Advisory Board.