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Mechanical Events of the Cardiac Cycle

View the animation below, then complete the quiz to test your knowledge of the concept.






1During which phase of the cardiac cycle does aortic pressure reach its maximum?
A)ventricular ejection.
B)ventricular filling.
C)isovolumetric – ventricles contract.
D)isovolumetric – ventricles relax.
E)both C and D.



2During which complete phase of the cardiac cycle do the atria both relax and contract?
A)ventricular ejection.
B)ventricular filling.
C)isovolumetric – ventricles contract.
D)isovolumetric – ventricles relax.
E)both C and D.



3During which complete phase of the cardiac cycle do both the atria and ventricles relax?
A)ventricular ejection.
B)ventricular filling.
C)isovolumetric – ventricles contract.
D)isovolumetric – ventricles relax.
E)both C and D.



4The audible heart sounds are caused by the contraction of the atria and ventricles.
A)True
B)False



5The P wave of the ECG coincides with ventricular filling.
A)True
B)False







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