The determinant for whether blood ejection occurs during ventricular contraction or whether filling occurs during ventricular relaxation is the pressure difference across the heart valves.

Question

Quizplus · Accepted Answer

The pressure difference across the heart valves determines whether blood ejection or filling occurs during ventricular contraction or relaxation, respectively. This is because blood flow is driven by pressure gradients, and the heart valves ensure that blood flows in the proper direction.

The Determinant for Whether Blood Ejection Occurs During Ventricular Contraction