Pericardium, Posterior View

Description

Posteriorly oriented, the pericardial sac is rendered as a tough fibrous pericardium enveloping the cardiac silhouette, with the base of the heart positioned superiorly and the apex directed inferiorly and to the left. Openings at the pericardial reflections frame the great vessels, including the ascending aorta and pulmonary trunk superiorly and the pulmonary veins entering the left atrium more posteriorly. Coronary vessels course on the epicardial surface beneath the serous pericardium, with venous channels tending to read as blue and purple against the myocardium. Spatially, the left atrium sits most posterior, while the ventricles project more anterior. Posterior anatomy matters in pericardial disease because fluid or thickening does not distribute uniformly around the heart and often accumulates in dependent recesses when a patient is supine. This view also maps the pericardial reflections that create the transverse and oblique pericardial sinuses, surgical landmarks during cardiopulmonary bypass when the great arteries are mobilized and clamped. One wrong plane can injure a pulmonary vein. Use this illustration in gross anatomy and cardiothoracic teaching modules to clarify the relationship between the fibrous pericardium, serous layers, and the pericardial sinuses, and in clinical education on pericarditis, constrictive physiology, and pericardiocentesis planning. It also supports textbook figures and patient-facing materials that need an accurate posterior reference for the left atrium, pulmonary venous entries, and coronary venous drainage patterns. Anatomical accuracy verified by SciePro's Medical Advisory Board.