Roof Levator ani m. Wall Obtulator internus m. Sacrotuburous ligament Anterior horn Suprerior to urogenital triangle 1. Ischiorectal fat 2. fibrous bands & septa 3. Inferior rectal vv & n 4. Alcock’s canal 5. Cutanous nerves (S2, 3) 6. Perineal br. (S4) Urogenital triangle

Deep perineal pouch -Potential space -Perineal membrane - attachment for electile tissue & muscles -Contents - Deep transverse perineal muscles - Membranous - External urethral sphincter m. - ( ♂) - Vagina ( ♀) - Artery to the bulb (/clitoris) - Terminal br. Of Pudendal n. -Potential space -Superior pelvic -Inferior pelvic fascia + Colli’s fascia - attachment for electile tissue & muscles Seperficial perineal pouch -Potential space -Contents - Electile tissues & muscles ( ♀) ( ♂) - Greater vestibular(Bartholin’s)gland ( ♀) - Vagina - Terminal br. Of Internal pudendal a. - Terminal br. Of Pudendal n.

Fibomuscular mass Junction of perineal muscles ♀Bulbospongiosus raphe. ♀Superficial transverse perineal tendons. ♀Sphinctor ani externus m. ♀Deep transverse ♀Levater ani m. Function ♀ supporting the posterior vaginal wall ♀ tear resistant

Root of penis Bulbospongiosum Bulbospongiosus m. Ischiocavernosum Ischiocavernosum m. Body Corpus spogiosum >> Glans Penile urethra Corpora cavernosa  Deep(Buck’s) fascia Superficial () fascia

Pudendal nerve Perineal br. Dorsal nerve of penis Ilioinguinal nerve Anterior Genitofemoral nerve Base of penis Internal pudendal artery Superficial perineal a. Deep perineal a. Dorsal a. Deep (central) a. External pudendal artery Perineal v. Superficial (subcutaneous) dorsal v. Deep dorsal v. Prostatic venous plexus

In the female • root of clitoris • bulbs of vestibule • Superficial perineal muscles • related vessels and nerves • Paraurethral glands • Great vestibular glands (Bartholin’s gland) External genitalia • labia majorum • labia minorum • clitoris • Vestibule • urethral opening • vulva Erection Pudendal nerve(S2-4) Pelvic splanchnic nerves(S2-4) (Nervi erigentes) Ejaculation Lumbar chain (L1-L2)