Stroke volume is described as?

Stroke volume is described as?

• A. The amount of blood ejected from the heart in one contraction
• B. The amount of blood in the ventricles at end-diastole
• C. The amount of blood remaining after contraction
• D. The total blood pumped per minute

Answer: (A)

Stroke volume is the amount of blood ejected from the ventricle with each heartbeat. It’s determined by the difference between the volume in the ventricle at the end of filling (end-diastolic volume) and the volume left after contraction (end-systolic volume), so SV = EDV − ESV. Stroke volume is a component of cardiac output, which is the total blood pumped per minute and equals SV multiplied by heart rate. The other descriptions refer to the filling volume (end-diastolic), the remaining volume after contraction (end-systolic), or the overall minute-by-minute output (cardiac output), not the amount ejected per beat.

Stroke volume is the amount of blood ejected from the ventricle with each heartbeat. It’s determined by the difference between the volume in the ventricle at the end of filling (end-diastolic volume) and the volume left after contraction (end-systolic volume), so SV = EDV − ESV. Stroke volume is a component of cardiac output, which is the total blood pumped per minute and equals SV multiplied by heart rate. The other descriptions refer to the filling volume (end-diastolic), the remaining volume after contraction (end-systolic), or the overall minute-by-minute output (cardiac output), not the amount ejected per beat.