diastole systole atria The cardiac cycle refers to the rhyth
diastole; systole; atria
| The cardiac cycle refers to the rhythmic relaxation (known as _______) and contraction (known as _______) of the _______. | |||||||||
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Solution
The rhythmic relaxation of the heart during the cardiac cycle is called as diastole and contraction is called as systole of the ventricles.
The cardiac cycle includes the sequence of relaxation diastole and phase of contraction systole. It includes atrial and ventricular systole and diastole.

