Structures

  • Ischiocavernosus
  • Bulbospongiosus
  • Superficial transverse perineal

MuscleActionOriginInsertionInnervationBlood supply
Ischiocavernosus- Move blood from crura into the body of the erect penis/ clitoris- Ischial tuberosity and ramus- Men: crus of penis
- Women: crus of clitoris
- Pudendal nerve (S2 to S4)- Internal pudendal artery
Bulbospongiosus- Women: moves blood to compress vaginal orifice and assists in clitoral erection
- Men: Compresses urethra to remove residual urine (after urination) and emission of semen during ejaculation
- In women: perineal body- Women: corpus cavernosum
- Men: corpus spongiosum and corpus cavernosum
- Pudendal nerve (S2 to S4)- Internal pudendal artery
Superficial transverse perineal- Stabilize the perineal body- Ischial tuberosity and ramus- Perineal body- Pudendal nerve (S2 to S4)- Internal pudendal artery