What is referred to as the difference between the end-diastolic and end-systolic volumes?

The term that describes the difference between end-diastolic volume (EDV) and end-systolic volume (ESV) is known as stroke volume. This measurement reflects the volume of blood ejected by the heart with each contraction. End-diastolic volume represents the amount of blood in the ventricles at the end of filling (diastole), while end-systolic volume indicates the amount of blood remaining in the ventricles after contraction (systole).

By subtracting the end-systolic volume from the end-diastolic volume, one can determine how much blood is pumped out of the heart during each beat, which is crucial for assessing cardiac function. Understanding stroke volume is vital in fields like exercise physiology, where it helps in evaluating changes in cardiovascular performance during physical activity.

Other options, such as cardiac output, blood pressure, and heart rate, are important measures related to cardiovascular health but do not specifically describe the difference between end-diastolic and end-systolic volumes. Cardiac output, for instance, is the total volume of blood pumped by the heart per minute and is calculated as stroke volume multiplied by heart rate. Blood pressure refers to the force exerted by circulating blood upon the walls of blood vessels