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Facial nerve and its disorders

Question
8 out of 33
 

Dryness of mouth with facial nerve injury - site of lesson is at: [UP 2008]



A Chorda tympani N

B Cerebellopontine angle

C Geniculate ganglion

D Concussion ofTympanic membrane

Ans. A Chorda tympani nervde.

Chorda Tympani Nerve Carries

So, Ideally a lesion of chorda tympani should impair both these functions but - sensations from ant 2/3rd of tongue are not impaired as an alternate pathway passing through the nerve of pterygoid canal to the otic ganglion exists (which doesnot pass through middle ear) which is preserved in lesions of chorda tympani.

Any lesion of chorda tympani thus leads to dryness of mouth

Facial nerve and its disorders Flashcard List

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