Anatomy 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. 💡 Explanation Ureteric peristalsis is due to intact supply of ✓ Correct Answer: D. Intrinsic smooth muscle pacemaker activity of renal calyces.