Isovolumic relaxation phase of the cardiac cycle ends with
Correct Answer: Opening of AV valve
Description: 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
Category:
Physiology
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