What happens to the valves when the ventricular walls relax?
A) Bicuspid valve opens and the tricuspid valve closes.
B) Tricuspid valve opens and the bicuspid valve closes.
C) Bicuspid and tricuspid valves close.
D) Bicuspid and tricuspid valves open.
E) Aortic and pulmonic valves open.

Question

Quizplus · Accepted Answer

When the ventricular walls relax (during diastole), the pressure in the ventricles falls below the pressure in the atria. This causes the bicuspid (mitral) and tricuspid valves to open, allowing blood to flow from the atria into the ventricles.

What Happens to the Valves When the Ventricular Walls Relax