1 — Apex of heart; 2 — Papillary muscles; 3 — Chordae tendineae; Tendinous cords; 4 — Trabeculae carneae, interventricular septum; 5 — Aortic valve; 6 — Pulmonary trunk; 7 — Left pulmonary artery; 8 — Arch of aorta; Aortic arch; 9 — Right pulmonary artery; 10 — Left atrium; 11 — Pulmonary veins; 12 — Coronary sinus; 13 — Mitral valve; Left atrioventricular valve; 14 — Inferior vena cava; 15 — Trabeculae carneae; 16 — Musculi pectinati; Pectinate muscles; 17 — Left auricle; 18 — Ligamentum arteriosum (Ductus arteriosus); 19 — Left superior
pulmonary vein; 20 — Valve of foramen ovale; 21 — Interatrial septum
