Physiology Renal artery lumen is reduced by half, what will be the blood flow? A Reduce by 1/2 B Reduce by 1/4 C Reduce by 1/16 D Come to normal after autoregulation 💡 Explanation Renal artery lumen is reduced by half, what will be the blood flow? ✓ Correct Answer: C. Reduce by 1/16