Isovolumic relaxation phase of the cardiac cycle ends with

Cardiac cycle events 1.    AV valves open – a.     End of isovolumetric relaxation b.    Start of rapid filling phase c.     ECG- end of T wave d.    JVP- Y wave (V-Y descent) 2.    AV valves closure- a.     End of diastole b.    Beginning of isovolumetric contraction c.     ECG- R wave later half d.    JVP- End of X descent 3.    Semilunar valves open a.     End of isovolumetric contraction b.    Ejection phase starts c.     ECG- ST segment d.    JVP- the peak of ‘c’ wave 4.    Semilunar valve closure a.     Systole ends b.    Isovolumetric relaxation starts c.     ECG- T wave later half