This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Lacrimal gland receives post ganglion innervation through? 
Select and explain. 
A. Submandibular ganglion, B. Pterygopalatine ganglion, C. Otic ganglion, D. Ciliary ganglion
B: Pterygopalatine ganglion
Answer: B: Pterygopalatine ganglion 
Explanation: 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.