Question: the cardiac event that completes ventricular filling is referred to as
Answer: Stages 1 ( Isovolumic relaxation ) and 2 ( Inflow : `` Rapid inflow '' , `` Diastasis '' , and `` Atrial systole '' ) together complete the ventricular `` Diastole '' period , during which blood returning to the heart flows through the atria into the ventricles .