Anatomy & Histology · single question
Facial drooping (unilateral) is caused by damage to which cranial nerve?
Show answer and explanation
Correct answer: C. Facial nerve (CN VII)
Unilateral facial drooping is caused by damage to CN VII (facial nerve). Bell's palsy is the classic example — ipsilateral paralysis of all facial muscles including the forehead.
- A. ❌ CN XII controls tongue movements.
- B. ❌ CN V provides facial sensation and motor to muscles of mastication; not facial expression.
- C. ✅ CORRECT – CN VII controls all muscles of facial expression; damage causes drooping (Bell's palsy).
- D. ❌ CN IX provides pharyngeal sensation and taste.
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