When left atrial pressure exceeds left ventricular pressure is the bicuspid valve open?

When left atrial pressure exceeds left ventricular pressure, the bicuspid (mitral) valve is open. This occurs during diastole, when the heart relaxes and blood flows from the left atrium into the left ventricle. The pressure difference allows the valve to remain open, facilitating blood flow. Conversely, when the left ventricular pressure rises above the left atrial pressure during systole, the valve closes to prevent backflow.