This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Nerve supply of ciliary muscles for pupil accommodation is: 
Select and explain. 
A. Parasympathetic and sympathetic system, B. Somatosensory nucleus, C. Trigeminal nerve, D. Red Nucleus of mid brain
C: Trigeminal nerve
Answer: C: Trigeminal nerve 
Explanation: The ciliary muscle receives parasympathetic ﬁbers from the short ciliary nerves that arise from the ciliary ganglion. 
The sympathetic postganglionic ﬁbers are part of cranial nerve V1 (Nasociliary  nerve of the trigeminal), while presynaptic parasympathetic ﬁbers to the ciliary ganglia are from the  oculomotor nerve.