Which term describes the volume ejected by the heart with each heartbeat?

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Multiple Choice

Which term describes the volume ejected by the heart with each heartbeat?

Explanation:
Stroke volume is the amount of blood the heart ejects with each beat. It’s defined by the difference between what the ventricle holds at the end of filling (end-diastolic volume) and what remains after contraction (end-systolic volume). In other words, stroke volume = end-diastolic volume minus end-systolic volume. The other terms describe related ideas but not the amount ejected per beat: end-systolic volume is the leftover after systole, preload refers to the initial stretch of the heart muscle related to filling, and cardiac output is the total volume pumped per minute (stroke volume times heart rate).

Stroke volume is the amount of blood the heart ejects with each beat. It’s defined by the difference between what the ventricle holds at the end of filling (end-diastolic volume) and what remains after contraction (end-systolic volume). In other words, stroke volume = end-diastolic volume minus end-systolic volume. The other terms describe related ideas but not the amount ejected per beat: end-systolic volume is the leftover after systole, preload refers to the initial stretch of the heart muscle related to filling, and cardiac output is the total volume pumped per minute (stroke volume times heart rate).

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