Human Heart: Diagram and Anatomy of the Heart internal anatomy of the heart Heart Diagram: Right/left Atria, Right/left Ventricles, Pulmonary Trunk, Aorta, Superior/inferior Vena Cavae, Pulmonary Veins, Coronary Sinus, Right/left Atrioventricular valves (tricuspid + bicuspid), Chordae Tendinae, Interatrial Septum, Interventricular Septum, Aortic and Pulmonary Semilunar Valves, Coronary Arteries and Cardiac Veins.