<prompt> Ureteric peristalsis is due to intact supply of?Sympathetic innervationParasympathetic innervationBoth sympathetic and parasympatheticIntrinsic smooth muscle pacemaker activity of renal calyces.  <response>: 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. 