Starting in the right atrium, deoxygenated blood passes throughthe ___31___ into the ___32___.During ventricular contraction the blood is expelled through the___33___ into the pulmonary trunk and___34___. The blood is carried to the lungs whereit is oxygenated through a capillary network and returns to the___35___ via the pulmonary veins. The blood passesthrough the ___36__ into the___37___. Contraction forces the blood through the___38___ and into the aorta. The aorta has severalbranches to deliver oxygenated blood throughout the body. The bloodpasses through capillaries in body tissues where gas exchangeoccurs and now the blood is deoxygenated. The deoxygenated bloodreturns from the systemic circuit via the superior & inferior___39___ to the ___40___.
