1 — Right posterolateral branch; 2 — Posterior vein of left ventricle; 3 — Coronary sinus; 4 — Atrial branches; 5 — Posterior left ventricular branch; 6 — Great cardiac vein; 7 — Circumflex branch; 8 — Pulmonary veins; 9 — Left atrium; 10 — Superior vena cava; 11 — Sinu-atrial nodal branch; 12 — Right atrium; 13 — Inferior vena cava; 14 — Right coronary artery; 15 — Small cardiac vein; 16 — Posterior interventricular branch; 17 — Middle cardiac vein; Posterior interventricular vein; 18 — Left coronary artery; 19 — Conus of branch; 20 — Right coronary
artery, posterior interventricular branch
