At the end of the isometric relaxation phase: (A) Atrioventricular valves open, (B) Atrioventricular valves close, (C) Corresponds to "C" wave in JVP, (D) Corresponds to T wave in ECG
Answer is A. At the end of Isovolumetric relaxation, the intraventricular pressures drop to less than the atrial pressure resulting in the opening of Atrioventricular valves Ref : Ganong 25th ed/page 539