what will the semilunar valves do when the ventricles relax
Cardiac Cycle Diastole Phase Early Diastole Ventricles relax. Semilunar valves close. Atrioventricular valves open. Ventricles fill with blood. Mid Diastole Atria and Ventricles are relaxed. Semilunar valves are closed.Atrioventricular valves are open. Ventricles continue to fill with blood.Late Diastole SA node contracts. Atria contract. Ventricles fill with more blood. Contraction reaches AV node.trioventricular valves open. Ventricles fill with blood. Mid Diastole Atria and Ventricles are relaxed. Semilunar valves are closed. Atrioventricular valves are open. Ventricles continue to fill with blood. Late Diastole SA node contracts.