Question

At the most relaxed point of ventricular diastole (lowest intraventricular pressure), __________________ valve(s) are open and __________________ valve(s) are closed.

Answer 1

It is a part of cardiac cycle,has 4 phases artrial systole,Atrial diastole,ventricular systole,ventricular diastole.

Mitral and tricuspid valves(Atrioventricular) are open which promote flow of blood from atria to ventricles.At early stage,atrioventricular remains open.Semilunar valves and pulmonary and aortic valves are closed

But during the late stage,atrioventricular valves are also closed,hence the volume in ventricles doesnot change,leading to isovolumetric condition