1 — External urethral orifice; 2 — Bulb of vestibule; 3 — Spongy layer; 4 — Mucosa; Mucous membrane; 5 — Muscular layer; Muscular coat; 6 — Vesical venous plexus; 7 — Ureteric orifice; 8 — Interureteric fold; 9 — Urinary bladder; 10 — Submucosa; 11 — Trigone of bladder; 12 — Internal urethral orifice; 13 — Urethral crest; 14 — Female urethra; 15 — Levator ani; 16 — Deep transverse perineal muscle; 17 — Ure-
thral lacunae; 18 — Vaginal orifice; 19 — Labium minus; 20 — Labium majus (по Р.Д. Синельникову, с изменениями)
