Cardiac Output - Cardiac Output...

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Cardiac Output The following variables are measures of  the capacity of the heart: class="bullet"> •    Stroke volume (SV)  is the volume  of blood ejected by each ventricle  during a single contraction. •    Heart rate (HR)  is the number of  heartbeats per minute. •    Cardiac output (CO)  is the volume  of blood pumped out of the right or left  ventricle per minute. CO = SV × HR. Cardiac output varies widely with the health of the individual and the state of activity at the time of measurement. Cardiac output in exercising athletes may exceed their resting
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cardiac output seven times. The ratio between the maximum and resting cardiac output of an individual is the cardiac reserve. Note that cardiac output changes when either stroke volume or heart rate changes. Stroke volume is regulated by the following three factors: Preload is the degree to which cardiac muscle cells are stretched by the blood entering the heart
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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Cardiac Output - Cardiac Output...

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