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
[{'content': 'Ureteric peristalsis is due to intact supply of? \nSelect and explain. \nA. Sympathetic innervation, B. Parasympathetic innervation, C. Both sympathetic and parasympathetic, D. Intrinsic smooth muscle pacemaker activity of renal calyces.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Intrinsic smooth muscle pacemaker activity of renal calyces.As with any other visceral smooth muscle peristaltic contraction in the ureter are enhanced by parasympathetic stimulation and inhibited by sympathetic stimulation.', 'role': 'assistant'}]