where does the blood flow that is in both ventricles
Ventricle (heart) In a four-chambered heart, such as that in humans, there are two ventricles that operate in a double circulatory system: the right ventricle pumps blood into the pulmonary circulation to the lungs, and the left ventricle pumps blood into the systemic circulation through the aorta.
Cardiac cycle 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. Near the end of the "Diastole", both atria pump blood into the ventricles during atrial systole, aka atrial kick. Stages 3 and 4 are the ventricular "Systole" period, which is the simultaneous pumping of separate blood supplies from the two ventriclesâ€”one to the pulmonary artery and one to the aorta.