NBME Gross Anatomy High Yield Practice Test

Which structure separates the deep perineal space from the superficial perineal space?

Perineal membrane (inferior fascia of UGD) Inferior fascia of UG diaphragm Deep perineal fascia Pelvic diaphragm

Correct Answer:

Perineal membrane (inferior fascia of UGD)

Explanation:

The perineal membrane, also known as the inferior fascia of the urogenital diaphragm, is the dividing sheet that separates the deep perineal space from the superficial perineal space. This fibrous membrane spans the UGD, forming the inferior boundary, so the space below it (toward the skin) is the superficial perineal pouch, while the space above it (toward the pelvic cavity) is the deep perineal pouch. The pelvic diaphragm sits above the deep pouch, and the deep perineal fascia lines the walls of the deep pouch, but neither defines the boundary between the two spaces in the same way the perineal membrane does.

Access more questions from this quiz

Continue to NBME Gross Anatomy High Yield Practice Test for more practice questions and the full quiz experience.

Access More Questions