Biology - Body Fluids and Circulation Question with Solution | TestHub

On an average, $1100-1200$ ml of blood is filtered by the kidneys per minute.

This volume constitutes roughly $\frac{1}{5}$th of the blood pumped out by each ventricle of the heart in a minute, which is the cardiac output.

Therefore, about $\frac{1}{5}$th of the cardiac output is supplied to the kidneys for osmoregulation and excretion.

Answer: $\frac{1}{5}$ th