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 urethra - External urethral sphincter m. - Bulbourethral gland ( ♂) - Vagina ( ♀) - Artery to the bulb (penis/clitoris) - Terminal br. Of Pudendal n. -Potential space -Superior pelvic fascia -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 perineal raphe ♀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 Tunica albuginea Deep(Buck’s) fascia Superficial (Dartos) fascia
Pudendal nerve Perineal br. Dorsal nerve of penis Ilioinguinal nerve Anterior scrotum 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)