-If the heart rate is 70 beats/min, then the cardiac output of this ventricle is closest to

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Quizplus · Accepted Answer

[IV E 1, G 1, 2]. Stroke volume is the volume ejected from the ventricle and is represented on the pressure-volume loop as phase $2 \rightarrow 3$; end-diastolic volume is about $140 \mathrm{~mL}$ and end-systolic volume is about $65 \mathrm{~mL}$; the difference, or stroke volume, is $75 \mathrm{~mL}$. Cardiac output is calculated as stroke volume $\times$ heart rate or $75 \mathrm{~mL} \times 70$ beats $/ \mathrm{min}=$ $5250 \mathrm{~mL} / \mathrm{min}$ or $5.25 \mathrm{~L} / \mathrm{min}$.

-If the Heart Rate Is 70 Beats/min, Then the Cardiac 3.45 L/min3.45 \mathrm{~L} / \mathrm{min}3.45 L/min

-If the Heart Rate Is 70 Beats/min, Then the Cardiac $3.45 \mathrm{~L} / \mathrm{min}$