When left atrial pressure exceeds left ventricular pressure,
A) left ventricular ejection begins.
B) aortic blood pressure begins to rise.
C) the bicuspid (mitral) valve opens.
D) ventricular volume decreases.
E) the tricuspid valve opens.

Question

Quizplus · Accepted Answer

The bicuspid (mitral) valve opens when the left atrial pressure exceeds the left ventricular pressure, allowing blood to flow from the left atrium into the left ventricle during the ventricular filling phase of the cardiac cycle.

When Left Atrial Pressure Exceeds Left Ventricular Pressure