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Laboratory 13. Gluteal Region
Step 6. Pudendal Nerve and Internal Pudendal Vessels

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To view the pudendal nerve and internal pudendal vessels, retract (or cut and remove a piece of) the sacrotuberous ligament [held by the retractor] near its attachment to the sacrum. The course of these structures in the gluteal region is very short. They enter the region through the greater sciatic foramen and exit through the lesser sciatic foramen.

The pudendal nerve, internal pudendal vein and internal pudendal artery pass posterior to the ischial spine between sacrospinous ligament [probe; retractor holds the sacrotuberous ligament] and sacrotuberous ligament. The further course of the pudendal nerve and internal pudendal vessels will be studied when the perineum is dissected.

Links and References:
Grant's: 5.36 and 5.37
Netter (1ed.): 472 and 473 (2ed.): 468 and 469
Rohen/Yokochi: 430, 453, and 455