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: Physiology
[{'content': 'Preganglionic neurotransmitter in sympathetic division of autonomic nervous system is: March 2013 \nSelect and explain. \nA. Noradrenergic, B. Adrenergic, C. Acetylcholine, D. Dopamine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. Acetylcholine In the autonomic nervous system, acetylcholine is released in the following sites: All pre- and post-ganglionic parasympathetic neurons All preganglionic sympathetic neurons - Preganglionic sympathetic fibers to suprarenal medulla, the modified sympathetic ganglion; on stimulation by acetylcholine, the suprarenal medulla releases epinephrine and nor epinephrine Some postganglionic sympathetic fibers - Sudomotor neurons to sweat glands.', 'role': 'assistant'}]