Which value reflects the volume of blood in the ventricles after diastole?

The value that reflects the volume of blood in the ventricles after diastole is known as End-Diastolic Volume. During diastole, the heart muscle relaxes, and the ventricles fill with blood coming from the atria. This filling process is crucial as it determines how much blood will be available for pumping out during the next contraction (systole).

End-Diastolic Volume specifically measures the maximum volume of blood in the ventricles just before they contract. This is important in assessing heart function and understanding conditions related to cardiac performance. A high volume may indicate good filling and preload, while a low volume may suggest issues with filling or heart efficiency. In contrast, End-Systolic Volume refers to the volume of blood remaining in the ventricles after they have contracted, which is a different phase of the cardiac cycle. Stroke Volume measures the amount of blood pumped by the heart with each beat, and Cardiac Output is the total volume of blood pumped by the heart per minute. These other measures provide essential insights into heart function but do not specifically address the volume after diastole.