Lacrimal gland receives post ganglion innervation through?: (A) Submandibular ganglion, (B) Pterygopalatine ganglion, (C) Otic ganglion, (D) Ciliary ganglion
Answer is B. The secretomotor fibres run as follows: Lacrimatory nucleus--nervus intermedius-- facial nerve--geniculate ganglion--greater petrosal nerve--nerve of pterygoid canal--pterygopalatine ganglion--relay--zygomatic nerve--zygomaticotemporal--lacrimal nerve-- lacrimal gland. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3, 4th edition.