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Muscles of Deep Perineal Space 3D

  • External Urethral Sphincter
    • * Originates from the inferior pubic ramus and perineal membrane, and inserts around the urethra.
    • * Its blood supply comes from the internal pudendal artery.
    • * Nerve supply is via pudendal nerve.
    • * Its action is to maintain urinary continence.
  • Compressor Urethrae
    • * Originates from the pubic arch, ischial ramus, and perineal membrane, and inserts around the urethra.
    • * Its blood supply comes from the internal pudendal artery, and its nerve supply comes from the pudendal nerve.
    • * Its action is to help control urine flow.                                                                                                                                                                                
  • Deep Transverse Perineal Muscle
    • * Originates from the ischial ramus and inserts into the perineal body.
    • * Its blood supply comes from the internal pudendal artery, and nerve supply from the pudendal nerve.
    • * Its action is to stabilize the pelvic floor.                                                                                                                                                                                     
  • Sphincter Urethrovaginalis
    • * Originates from the anterior vaginal wall and pubic arch, and inserts around the urethra and vagina in females.
    • * Its blood supply comes from the internal pudendal artery, and nerve supply from the pudendal nerve.
    • * Its action is to maintain continence of both urine and vaginal secretions in females.

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  • External Urethral Sphincter
    • * Originates from the inferior pubic ramus and perineal membrane, and inserts around the urethra.
    • * Its blood supply comes from the internal pudendal artery.
    • * Nerve supply is via pudendal nerve.
    • * Its action is to maintain urinary continence.
  • Compressor Urethrae
    • * Originates from the pubic arch, ischial ramus, and perineal membrane, and inserts around the urethra.
    • * Its blood supply comes from the internal pudendal artery, and its nerve supply comes from the pudendal nerve.
    • * Its action is to help control urine flow.                                                                                                                                                                                
  • Deep Transverse Perineal Muscle
    • * Originates from the ischial ramus and inserts into the perineal body.
    • * Its blood supply comes from the internal pudendal artery, and nerve supply from the pudendal nerve.
    • * Its action is to stabilize the pelvic floor.                                                                                                                                                                                     
  • Sphincter Urethrovaginalis
    • * Originates from the anterior vaginal wall and pubic arch, and inserts around the urethra and vagina in females.
    • * Its blood supply comes from the internal pudendal artery, and nerve supply from the pudendal nerve.
    • * Its action is to maintain continence of both urine and vaginal secretions in females.

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