на уровне верхней и средней его третей:
1 — Middle cardiac vein; Posterior interventricular vein; 2 — Interventricular septum, muscular part; 3 — Posterior papillary muscle; 3 — Chordae tendineae; Tendinous cords; 5 — Left ventricle; 6 — Anterior papillary muscle; 7 — Left coronary artery, left marginal branch; 8 — Anterior interventricular sulcus; 9 — Left coronary artery, anterior interventricular branch; 10 — Anterior interventricular vein; 11 — Serous pericardium, visceral layer, epicardium; 12 — Myocardium; 13 — Endocardium; 14 — Right ventricle; 15 — Septomarginal trabecula; Moderator band; 16 — Right coronary artery, right marginal branch; 17 — Trabeculae carneae; 18 — Tricuspid valve; Right atrioventricular valve, septal cusp; 19 — Posterior interventricular sulcus; 20 — Right coronary artery, posterior interventricular branch
