NBME 22 Greater mucosal surface area (NBME Answers)

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Retired NBME 22 Answers

nbme22/Block 2/Question#46 (reveal difficulty score)
A 62-year-old man is being evaluated for ...
Greater mucosal surface area 🔍 / 📺 / 🌳 / 📖
tags: GI

+15 upvote downvote
submitted by ∗paperbackwriter(161)

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As my Bio 101 professor used to say, the answer to everything is either sex or surface area.

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+8 upvote downvote
submitted by ∗hayayah(1212)

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X in the image is the small intestine. Its characteristic feathery appearance after a barium meal is due to permanent circular folds and villi. The villi give the small intestine a great mucosal surface area.

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nwinkelmann Yes. The appearance of the mucosal folds depends upon the diameter of the bowel, and when they fold they appear feathery. Mucosal folds are largest and most numerous in the jejunum and tend to disappear in the lower part of the ileum. +2

+4 upvote downvote
submitted by ∗sweetmed(157)

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PLica circularis: muscosal folds that extend from distal duodenum to proximal ileum FA2018 pg 356

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paperbackwriter not sure why you were downvoted... correct (maybe pg number wrong??) +

forkyeaa FA 2020 pg 362 +

+0 upvote downvote
submitted by inmyblood(0)

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What is the letter Y indicating in the picture? is it the large intestine?

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humble_station For this answer to make sense to me, Y should be the beginning of the large intestine like the terminal ileum/cecum leading up to the ascending colon +

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