What is ventricular diastole?

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Multiple Choice

What is ventricular diastole?

Ventricular diastole is the relaxation phase of the ventricles in the cardiac cycle, when the ventricles are not contracting but are relaxing to fill with blood from the atria. As the ventricles relax, their pressure falls below atrial pressure, causing the atrioventricular valves to open and blood to flow into the ventricles—rapid filling followed by slower filling, with atrial contraction contributing the final push just before the next ventricular contraction. This distinguishes it from ventricular systole, the phase when the ventricles contract and pump blood outward. The statement describing the ventricles relaxing and filling best captures what happens during this phase. The other options describe atrial contraction, ventricular contraction, or a general resting phase, which are not the specific ventricular relaxation and filling process.

Ventricular diastole is the relaxation phase of the ventricles in the cardiac cycle, when the ventricles are not contracting but are relaxing to fill with blood from the atria. As the ventricles relax, their pressure falls below atrial pressure, causing the atrioventricular valves to open and blood to flow into the ventricles—rapid filling followed by slower filling, with atrial contraction contributing the final push just before the next ventricular contraction. This distinguishes it from ventricular systole, the phase when the ventricles contract and pump blood outward. The statement describing the ventricles relaxing and filling best captures what happens during this phase. The other options describe atrial contraction, ventricular contraction, or a general resting phase, which are not the specific ventricular relaxation and filling process.

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