This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': 'Nerve fibres innervating sweat glands release the following at their ending \nSelect and explain. \nA. Noradrenaline, B. Acetycholine, C. Dopamine, D. Histamine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Nerve fibres innervating sweat glands are cholinergic.Ref: Ganong&;s review of medical physiology 23rd edition Page no: 267', 'role': 'assistant'}]