Biology - Body Fluids and Circulation Question with Solution | TestHub

Cardiac output is the volume of blood pumped by each ventricle per minute.

$\text{Cardiac output}=\text{Stroke volume}\times \text{Heart rate}$

Given:
$\text{Cardiac output}=5250\text{ ml/min}$
$\text{Stroke volume}=70\text{ ml}$

$\text{Heart rate}=\frac{\text{Cardiac output}}{\text{Stroke volume}}$

$\text{Heart rate}=\frac{5250}{70}=75\text{ beats per minute}$

Answer: 75