Physiology Coronary blood flow is maximum during which phase of cardiac cycle:September 2011, September 2012, March 2013 A Isovolumic relaxation phase B Isovolumic contraction phase C Ejection phase D Isovolumic contraction phase 💡 Explanation Coronary blood flow is maximum during which phase of cardiac cycle:September 2011, September 2012, March 2013 ✓ Correct Answer: A. Isovolumic relaxation phase