Ureteric peristalsis is due to intact supply of?: (A) Sympathetic innervation, (B) Parasympathetic innervation, (C) Both sympathetic and parasympathetic, (D) Intrinsic smooth muscle pacemaker activity of renal calyces.
Answer is D. 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.