1 — Superior vena cava; 2 — Internal jugular vein; 3 — Subclavian vein; 4 — Right vertebral vein; 5 — Right deep cervical vein; 6 — Myelencephalon; Medulla oblongata; Bulb; 7 — Atlas [CI]; 8 — Anterior spinal vein; 9 — Left deep cervical vein; 10 — Left vertebral vein; 11 — Left brachiocephalic vein; 12 — Accessory hemi-azygos vein; Superior hemi-azygos vein; 13 — Intercostal veins; 14 — Posterior radicular vein; 15 — Anterior radicular vein; 16 — Hemiazygos vein; Inferior hemi-azygos vein; 17 — Azygos vein; 18 — Inferior vena cava; 19 — Common iliac vein
