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Laboratory 41. The Female Perineum
Step 13. The Deep Perineal Pouch

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Detach the crura of the clitoris from the ischiopubic rami and reflect them laterally.

Carefully open the inferior fascia of the urogenital diaphragm. By doing this, the deep perineal pouch will be entered. Its superior and inferior borders are formed by the superior and inferior fascia of the urogenital diaphragm, respectively.
Laterally, the deep perineal pouch extends to the ischiopubic rami and anteriorly, to the transverse perineal ligament, which is formed by the fusion of the superior and inferior fascias of the urogenital diaphragm. The posterior extent of this pouch is the posterior border of the urogenital diaphragm.

Links and References:
Grant's: 3.79
Netter (1ed.): 355, 356 (2ed.): 351, 352
Rohen/Yokochi: 341