During the ejection period, . During the ejection period, . the atria are filling blood is pumped into the pulmonary trunk blood is pumped into the aorta and the pulmonary trunk blood is pumped into the aorta the ventricles are filling Request Answer Part B Cardiac output is . Cardiac output is . equal to heart rate times (EDV minus ESV) equal to heart rate times stroke volume equal to blood flow equal to blood flow and equal to heart rate times stroke volume All of the above. Request Answer Part C The left side of the heart pumps blood . The left side of the heart pumps blood . to the lungs through the tricuspid valve and to the lungs through the tricuspid valve through the aortic valve Request Answer Part D What variable(s) can the cardiovascular system alter to maintain blood pressure