If the seventh nerve is damaged on the right side of the face______________?
Correct answer: B. the muscles of facial expression would be denervated
- A. the muscles of mastication would be denervated
- B. the muscles of facial expression would be denervated
- C. taste from the right anterior two thirds of the tongue would not be affected
- D. sympathetic fibre to salivary gland would be interrupted
Explanation
The facial nerve supplies the muscles of facial expression, so a right facial-nerve lesion weakens those muscles on the right. It does not supply mastication or sympathetic fibres, and it can also impair taste from the anterior two-thirds through the chorda tympani.
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