The volume of blood pumped out by the Rt and Lt ventricle is same Cardiac Cycle consists of one heart beat or one cycle of contraction and relaxation of the cardiac muscle. The contraction phase is called the systole while the relaxation phase is called the diastole. The purpose of the cardiac cycle is to effectively pump the blood. The right ventricle pumps the volume of deoxygenenated blood to the lungs through the pulmonary artery. After the oxygenation of blood, the volume of blood carried through pulmonary vein is pumped through left ventricle into the aorta and transferred to the entire body. This pumping of blood, is about the same and any mismatch in volumes ejected by the ventricles (i.e., right ventricle pump more blood than left or vice versa) can result in the heart failure. Thus, all the other option are wrong.

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