In facial nerve injury, loss of lacrimation is due to involvement of: (A) Chorda tympani nerve, (B) Buccal nerve, (C) Greater superficial petrosal nerve, (D) Deep petrosal nerve
Answer is C. Secretomotor fibres to lacrimal gland leave at geniculate ganglion greater superficial petrosal nerve Ref: Dhingra 6th edition Pg. 97