Chapter 7, Problem 4P

The contraction phase of the heartbeat is ______; the relaxation phase is _______.

Which artery carries oxygen-poor blood?

Figure 40.11 Which of the following statements about the heart is false? The mitral valve separates the left ventricle from the left atrium. Blood travels through the bicuspid valve to the left atrium. Both the aortic and the pulmonary valves are semilunar valves. The mitral valve is an atrioventricular valve.