Question

During atrial and ventricular diastole, the atria and ventricles are ________. The AV valves ________, and the semilunar valves _______. Blood enters the __________ through the ________, and enters the ________ through the _____________.

Answer 1

During atrial and ventricular diastole, the atria and ventricles are relaxed. The AV valves are open, and the semilunar valves are closed.

Step-by-step explanation:

During atrial and ventricular diastole, the atria and ventricles are relaxed. The AV valves are open, and the semilunar valves are closed. Blood enters the atria through the venae cavae and the pulmonary veins, and enters the ventricles through the tricuspid and mitral valves.