This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Which of the following cranial nerves does not carry parasympathetic outflow 
Select and explain. 
A. Oculomotor, B. Trochlear, C. Facial, D. Glossopharyngeal
B: Trochlear
Answer: B: Trochlear 
Explanation: Ref: Clinical Neuroanatomy 2nd edition Vishram Singh (page no:238) Katzung 11/e p78 parasympathetic fibers arise from brainstem run through 3rd (oculomotor), 7th (facial), 9th(glossopharyngeal), 10th(vagus) cranial nerves and terminate in the parasympathetic ganglia in the head and neck So Trochlear nerve not included in this outflow