The mitral valve is open during:
A) systole.
B) cardiac standstill.
C) diastole.
D) repolarization.

Question

Quizplus · Accepted Answer

The mitral valve is open during diastole, which is the relaxation phase of the cardiac cycle where the ventricles fill with blood. During systole (A), the ventricles contract and the mitral valve closes to prevent backflow of blood. Cardiac standstill (B) is not a normal phase of the cardiac cycle. Repolarization (D) refers to the resetting of the electrical charge in cardiac cells and does not involve the mitral valve.

The Mitral Valve Is Open During