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NBME 23 Answers

nbme23/Block 4/Question#50

A 48-year-old man has complete loss of hearing in ...

Area labeled ā€˜Cā€™ (Cranial nerve 8: vestibulocochlear)

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submitted by seagull(355),

What a terrible picture. They they covered up part of it with lines. WTF

sympathetikey  Agreed. +  
catch-22  Start at the pontomedullary junction and count from superior to inferiorly (or medially to laterally): VI, VII, VIII, IX. +  
yotsubato  I looked at the left side (cause the nerves arent frazzled up). Saw 7 and 8 come out together nicely. Then picked the right sided version of 8 +  
lolmedlol  why is it not H or I on the right side; the stem says he has hearing loss on the right side, so the lesion should be ipsilateral no? +  
catch-22  You're looking at the ventral aspect of the brainstem. +2  
catch-22  ^Also, you know it's the ventral aspect because you can see the medullary pyramids. +  
amarousis  think of the belly of the pons as a pregnant lady. so you're looking at the front of her +1