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Muscles of Superficial Perineal Space

  • Bulbospongiosus Muscle
    • * Originates from the central tendon of the perineum and the midline raphe of the bulb of the penis or vestibular bulb in females.
    • * Inserts onto the fascia of the corpus cavernosum of the penis or clitoris.
    • * Is supplied by the perineal branch of the pudendal nerve.
    • * Action includes contraction during orgasm, erection, and ejaculation.

 

  • Ischiocavernosus Muscle
    • * Arises from the ischial tuberosity. * Inserts onto the crus of the penis or clitoris.
    • * Is supplied by the perineal branch of the pudendal nerve.
    • * Action includes contraction during erection and assists in maintaining the rigidity of the penis or clitoris.

 

  • Superficial Transverse Perineal Muscle​​​​​​​
    • * Originates from the ischial tuberosity.
    • * Inserts onto the perineal body and the inferior ramus of the pubis.
    • * Is supplied by the perineal branch of the pudendal nerve.
    • * Action includes stabilizing the perineal body during contraction of other pelvic muscles.

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  • Bulbospongiosus Muscle
    • * Originates from the central tendon of the perineum and the midline raphe of the bulb of the penis or vestibular bulb in females.
    • * Inserts onto the fascia of the corpus cavernosum of the penis or clitoris.
    • * Is supplied by the perineal branch of the pudendal nerve.
    • * Action includes contraction during orgasm, erection, and ejaculation.

 

  • Ischiocavernosus Muscle
    • * Arises from the ischial tuberosity. * Inserts onto the crus of the penis or clitoris.
    • * Is supplied by the perineal branch of the pudendal nerve.
    • * Action includes contraction during erection and assists in maintaining the rigidity of the penis or clitoris.

 

  • Superficial Transverse Perineal Muscle​​​​​​​
    • * Originates from the ischial tuberosity.
    • * Inserts onto the perineal body and the inferior ramus of the pubis.
    • * Is supplied by the perineal branch of the pudendal nerve.
    • * Action includes stabilizing the perineal body during contraction of other pelvic muscles.

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