1 — Perineal membrane; 2 — Pubococcygeus; 3 — Median umbilical ligament; 4 — Obturator internus; 5 — Obturator nodes; 6 — Obturator artery; Obturator veins; 7 — Pubic branch; 8 — Obturator nerve; 9 — External iliac nodes; 10 — External iliac vein; 11 — External iliac artery; 12 — Iliacus; 13 — Deep circumflex iliac artery; 14 — Common iliac artery; 15 — Common iliac vein; 16 — Internal iliac artery; 17 — Internal iliac vein; 18 — Sacral nodes; 19 — Internal iliac nodes; 20 — Lateral sacral arteries; 21 — Median sacral artery; 22 — Middle rectal artery; 23 — Internal pudendal artery; 24 — Ischiococcygeus; Coccygeus; 25 — Iliococcygeus; 26 — Puborectalis; 27 — Inferior vesical artery
