Physiology Cardiac event at the end of isometric relaxation phase:- A Atrioventricular valves open B Atrioventricular valves closes C Corresponds to peak of C wave in JVP D Corresponds to T wave in ECG 💡 Explanation Cardiac event at the end of isometric relaxation phase:- ✓ Correct Answer: A. Atrioventricular valves open