1 — Posterior papillary muscle; 2 — Anterior papillary muscle; 3 — Septal cusp; 4 — Posterior cusp; 5 = 3 + 4 — Tricuspid valve; Right atrioventricular valve; 6 — Right coronary artery; 7 — Interventricular septum, membranous part; 8 — Right auricle; 9 — Aortic sinus; 10 — Ascending aorta; 11 — Aortic valve, posterior semilunar cusp, noncoronary cusp; 12 — Left atrium; 13 — Aortic valve, left semilunar cusp; left coronary cusp; 14 = 15 + 16 — Mitral valve; Left atrioventricular valve; 15 — Posterior cusp; 16 — Anterior cusp; 17 — Interventricular
septum, muscular part; 18 — Apex of heart
