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NBME 20 Answers

nbme20/Block 1/Question#22 (27.2 difficulty score)
A 38-year-old woman comes to the physician ...

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submitted by toxoplasmabartonella(12),
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CN X siercar rfenfete to l.paate CN XI rsacier atfefern ofrm taa.pel

submitted by hmorela(14),
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hWy is ti ahtt the sneraw ni'st slao nehglsrpgsyaaool sncie ouy sett NC IX by gniyas "hA" sloa? alesPe ehlp! sThnka!!

sinforslide  I believe that the arrow pointed to the uvula; uvular deviation would be testing for CN X palsy. CN IX's only motor innervation is the stylopharyngeus. (Not testing for gag reflex!) +13  

submitted by fatboyslim(60),

Glossopharyngeal nerve function: - Taste and sensation from posterior 1/3 of tongue - Swallowing - Salivation (parotid gland) - Monitoring carotid body and sinus chemo- and baroreceptors - Elevation of pharynx/larynx (stylopharyngeus)

utap2001  The only motor of CN9 is stylopharyngeus. Almost all other motor function of pharynx and larynnx are from CN10. And stylopharyngeus function is to elevate pharynx. This question is to elevate soft palate. +