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Facial nerve and its disorders

Question
10 out of 33
 

Right upper motor neuron lesion of facial nerve causes: (LQ)



A Loss of taste sensation in right anterior part tongue

B Loss of corneal reflex right side

C Loss of wrinkling of forehead left side

D Paralysis of lower facial muscles left side

Ans. D Paralysis of lower facial muscles at left side

It is a General Rule that:

• UMN lesion cause

• Contralateral paresis

• LMN lesion cause

• Ipsilateral paresis

So, right upper motor neuron lesion of facial nerve will lead to paresis 1 deformity of left side. (Ruling out options "a" and "b")

In Right UMN Palsy

a. Facial muscles of opposite side (left side) will be affected

b. Upper facial (forehead) muscles will be spared

c. So patient will have paralysis of lower facial muscles on contralateral (left) side.

Facial nerve and its disorders Flashcard List

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