GENERAL ANATOMY
ANATOMY OF THE HEART
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the amount of blood ejected from the left ventricle during each beat
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the amount of blood ejected from the left ventricle during each minute.
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the amount of blood ejected from the right ventricle during each beat
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the amount of blood ejected from the right ventricle during each minute.
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Detailed explanation-1: -Cardiac output is the product of heart rate (HR) and stroke volume (SV) and is measured in liters per minute. HR is most commonly defined as the number of times the heart beats in one minute. SV is the volume of blood ejected during ventricular contraction or for each stroke of the heart.
Detailed explanation-2: -Stroke volume is the amount of blood the left ventricle pumps out in one cardiac cycle. This is around 70 ml. Cardiac output is the volume of blood pumped out by each ventricle per minute. Now to get cardiac output, we have to multiply stroke volume with the normal heart rate of 72 beats/min and we get 5, 040 ml/min.
Detailed explanation-3: -Cardiac output is the result of systolic contraction of the left ventricle, which can be influenced by preload, afterload, and contractility. Cardiac output (CO) is defined as the amount of blood that is pumped out of the heart in a given time.
Detailed explanation-4: -Cardiac output, expressed in liters/minute, is the amount of blood the heart pumps in 1 minute. Cardiac output is logically equal to the product of the stroke volume and the number of beats per minute (heart rate).
Detailed explanation-5: -The volume of blood pumped out of the left ventricle in one beat is called the stroke volume. It is 70 ml.