1 — Internal urethral orifice; 2 — Urinary bladder; Muscular layer; Muscular coat; Detrusor; 3 — Urinary bladder; Mucosa; Mucous membrane; 4 — Ureteric orifice; 5 — Ureter; Intramural part; 6 — Interureteric fold; 7 — Body of bladder; 8 — Trigone of bladder; 9- Neck of bladder; 10 = 11 + 12 + 13 — Male urethra; 11 — Mucosa; Mucous membrane; 12 — Submucosa; 13 — Muscular layer; Muscular coat
