Which of the following is TRUE during ventricular filling Ch

Which of the following is TRUE during ventricular filling? Check ALL that apply.

(0.3pts)

The semilunar valves are open.

The ventricles are in diastole.

The atrioventricular valves are open.

Blood flows from the heart through the aorta and the pulmonary trunk.

Solution

Answer:

The ventricles are in diastole.

The atrioventricular valves are open.

The ventricular diastolic phase occurs when the ventricle relaxes and fills with blood. Blood flowing back toward the relaxed ventricles causes the semilunar valves to close, which is the beginning of ventricular diastole. During ventricular diastole the passive ventricular filling followed by active ventricular filling occurs, the AV valves (atrioventricular valves) open and blood flows into the relaxed ventricles, accounting for most of the ventricular filling. In active ventricular filling, the atria contract and complete ventricular filling.