ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The amount of blood pumped out of the heart during each contraction = ____
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heart rate
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stroke volume
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cardiac output
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None of the above
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Explanation:
Detailed explanation-1: -(i) During a cardiac cycle each ventricle pumps out approximately 70mL of blood which is called the stroke volume.
Detailed explanation-2: -The average stroke volume of a 70 kg male is 70 mL Not all of the blood that fills the heart by the end of diastole (end-diastolic volume-EDV) can be ejected from the heart during systole. Thus the volume left in the heart at the end of systole is the end-systolic volume (ESV).
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