1 — Serous pericardium, visceral layer, epicardium; 2 — Myocardium; 3 — Right ventricle; 4 — Posterior papillary muscle; 5 — Tricuspid valve; Right atrioventricular valve, posterior cusp; 6 — Right atrioventricular orifice; 7 — Valve of coronary sinus; 8 — Opening of coronary sinus; 9 — Valve of inferior vena cava; 10 — Inferior vena cava; 11 — Fossa ovalis; Oval fossa; 12 — Right atrium, crista terminalis; 13 — Intervenous tubercle; 14 — Limbus fossae ovalis; Border of oval fossa; 15 — Openings of smallest cardiac veins; 16 — Superior vena cava; 17 — Interatrial septum; 18 — Ascending aorta; 19 — Musculi pectinati; Pectinate muscles; 20 — Right auricle; 21 — Right atrium; 22 — Right coronary artery; 23 — Tricuspid valve; Right atrioventricular valve, septal cusp; 24 — Tricuspid valve; Right atrioventricular valve, anterior cusp; 25 — Anterior papillary muscle; 26 — Septal papillary muscle; 27 — Septomarginal trabecula; Moderator band; 28 — Interventricular septum, muscular part;
29 — Apex of heart
