1 — Vein of bulb of penis; 2 — Deep dorsal vein of penis; 3 — Deep veins of penis; 4 — Prostatic venous plexus; 5 — Vesical venous plexus; 6 — Internal iliac vein; 7 — Vesical veins; 8 — Inferior gluteal veins; 9 — Middle rectal veins; 10 — Internal pudendal vein; 11 — Inferior rectal
veins; 12 — Posterior scrotal veins
