1 — Inferior vena cava; 2 — Posterior intercostal veins; 3 — Superior vena cava; 4 — Azygos vein; 5 — Subclavian vein; 6 — Internal jugular vein; 7 — Brachiocephalic vein; 8 — Internal thoracic vein; 9 — Anterior intercostal veins; 10 — Superior epigastric vein; 11 — Musculophrenic vein; 12 — Subcostal vein; 13 — Inferior epigastric vein; 14 — External iliac vein; 15 — Femoral vein
