During Ventricular Filling,the

Question

During ventricular filling,the
A) semilunar valves are open.
B) AV valves are closed.
C) QRS complex is "happening."
D) ventricles are relaxed.

Accepted Answer

During ventricular filling, the ventricles are relaxed (diastole) and filling with blood from the atria. The semilunar valves are closed while the AV valves are open to allow blood to flow from the atria into the ventricles. The QRS complex, which represents ventricular depolarization, occurs during ventricular contraction (systole).