The branch of facial nerve that conveys the secretomotor impulse involved in lacrimation is_____________?
Correct answer: C. Greater petrosal nerve
- A. Chorda tympani nerve
- B. Deep peterosal nerve
- C. Greater petrosal nerve
- D. Lesser petrosal nerve
Explanation
Preganglionic parasympathetic fibres for lacrimation leave the facial nerve in the greater petrosal nerve and synapse in the pterygopalatine ganglion. The deep petrosal nerve carries sympathetic fibres, while the lesser petrosal nerve is associated mainly with parotid secretion.
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