BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
CARDIOVASCULAR SYSTEM
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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 definition of stroke volume is the volume of blood pumped out of the left ventricle of the heart during each systolic cardiac contraction.
Detailed explanation-3: -Stroke volume is the difference between end-diastolic and end-systolic volumes; it is the volume ejected with each heart beat. The normal range is 50 to 100 ml.
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