This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy 3, Subject name: Anatomy
Which one of the following deficits results from the destruction of the ciliary ganglion? 
Select and explain. 
A. Loss of corneal reflex, B. Loss of direct pupillary reflex, C. Loss of lacrimation, D. Miosis
B: Loss of direct pupillary reflex
Answer: B: Loss of direct pupillary reflex 
Explanation: Destruction of the ciliary ganglion interrupts postganglionic parasympathetic fibers, which innervate the sphincter pupillae and ciliaris; this results in- loss of the direct pupillary reflex, mydriasis, and loss of accommodation.