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': 'Which does not cause relaxation of urinary bladder ? \nSelect and explain. \nA. Sympathetic Stimulation, B. Muscarinic receptors, C. Beta receptors, D. None of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is'b'i.e., Muscarinic receptorsSympathetic stimulation causes relaxation of bladder (detrusor muscle) beta-2 adrenoreceptors.Parasympathetic stimulation cause contraction of bladder (detrusor muscle) muscarinic M3 receptors.", 'role': 'assistant'}]