Question

ventricular pressure is increasing, blood volume remains the same, all valves are closed indicate which period of the cardiac cycle?

Answer 1

This scenario indicates the ventricular filling period or diastole of the cardiac cycle. During this period, the ventricles relax and fill with blood from the atria. The valves between the atria and ventricles (the atrioventricular valves) are open, allowing blood to flow into the ventricles. The valves between the ventricles and the great vessels (the semilunar valves) are closed, preventing blood from leaving the ventricles. As the ventricular pressure increases, the atrioventricular valves close and the ventricular systole begins.