what time is the ventricular contraction and relaxation take places
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The cardiac cycle comprises a complete relaxation and contraction of both the atria and ventricles, and lasts approximately 0.8 seconds. Beginning with all chambers in diastole, blood flows passively from the veins into the atria and past the atrioventricular valves into the ventricles.
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it takes
o.8 second for complete pumping of blood from heart
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