NBME 18 Basement Membranes (NBME Answers)

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Retired NBME 18 Answers

nbme18/Block 4/Question#36 (reveal difficulty score)
25 yo with severe crush injuries to the chest ...
Basement Membranes 🔍 / 📺 / 🌳 / 📖
tags: cell_bio cell_biology

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submitted by ∗cbreland(195)

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If you knew that basement membrane disruption prevents restoration of normal tissue (repeat from another NBME), then you missed this because you didn't know what "preclude" means.

High yield reference: https://www.merriam-webster.com/dictionary/preclude
Does NOT mean "prior to"

Missing questions I miss due to lack of vocab and grammar, you love to see it

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cbreland Say a prayer for me +3

drdoom you can include. you can exclude. or you can altogether preclude. +2

drdoom all these words, along with “claudication”, share the same Latin root: clud = claud (to shut) +1

dhpainte22 Missed it for the same reason :( +1

hamdiabdeen Can someone explain why basement membrane is correct answer as opposed to capillaries or Type I pneumocytes? +

hamdiabdeen You right, thank you +

randi guess I gotta make an Anki card for the definition of preclude then +

sparta does anybody have a dictionary Anki deck? +1

notpennysboat Guilty. I spent good time on this question trying to figure it out, and still got it wrong +

+1 upvote downvote
submitted by ∗an1(114)

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Correct me if I'm wrong. But I think both types of Pneumocytes sit in the basement membrane. Damage to Type 2 results in an inability to restore lung tissue (they regenerate 1 and increase surfactant) whereas type 1 is used for gas diffusion. So if the BM with the type 2 pneumocystis is damaged, no restoration. I didn't pay much attention to preclude though lol...

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