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Lecture 45: Introduction Pelvis and Perineum, Skeleton, Ischiorectal fossa, Pudendal Nerve, Fournier Gangrene

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Posted by lae2 on October 13, 2021 at 17:55:46:

Essay Questions

Trace the case the course of the pudendal nerve and its ramifications from pelvic cavity to the perineum. Include branches, function, and clinical significance. How might variations in the pathway of the dorsal nerve impact participation in sports.
Define the boundaries and contents of the anterior and posterior recesses of the ischiorectal fossa. Discuss the spread of Fournier gangrene that is contained within the ischiorectal fossa and the expected consequences of damage to the contents of the ischiorectal fossa.

True False Questions

The deep dorsal vein of the penis or clitoris passes from the perineum into the pelvis to enter the prostatic or vesicle venous plexus respectively.
The the urogenital and anal triangles of the perineum share a base represented by a line between the ischial tuberosities.
An anterior boundary of the posterior recess of the ischiorectal fossa is at the posterior free edge of the urogenital diaphragm.
A superior boundary of the anterior superior recess of the ischiorectal fossa is the inferior fascia of the pelvic diaphragm.
A lateral boundary of the anterior superior recess of the ischiorectal fossa is the obturator fascia and conjoint ramus.
A medial boundary of the anterior superior recess of the ischiorectal fossa is the fusion of the inferior fascia of the pelvic diaphragm with the superior fascia of the urogenital diaphragm.
A inferior boundary of the anterior superior recess of the ischiorectal fossa is the superior fascia of the urogenital diaphragm.
A posterior boundary of the anterior superior recess of the ischiorectal fossa is the posterior free edge of the urogenital triangle and is continuous with the posterior recess of the ischiorectal fossa.
An inferior boundary of the posterior recess of the ischiorectal fossa is the perianal skin.
A superior boundary of the posterior recess of the ischiorectal fossa is the inferior fascia of the pelvic diaphragm.
An anterior boundary of the posterior recess of the ischiorectal fossa is the posterior free edge of the urogenital diaphragm and is continuous with the anterior superior recess of the ischiorectal fossa.
A posterior boundary of the posterior recess of the ischiorectal fossa is the gluteus maximus muscle.
Notable structures at risk in the case of fournier gangrene of the ischiorectal fossa include the internal pudendal vessels, pudendal nerve distribution, anal canal, and the external anal sphincter.
A likely consequence of damage to structures within the ischiorectal fossa is fecal and urinary incontinence.
The proximal entrance into the pudendal (Alcock's) canal is near the lesser sciatic foramen, whereas the exit is near the posterior free edge of the urogenital diaphragm.
The dorsal nerve of the penis or clitoris may travel one of three pathways to arrive onto the dorsum; superficial pouch, deep pouch, or anterior superior recess of the ischiorectal fossa.
A professional bicyclist might benefit if their dorsal nerve travels within the anterior superior recess of the ischiorectal fossa and, thus, is not vulnerable to compression by a bicycle seat.



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