In a capillary, $\mathrm{P}_{\mathrm{c}}$ is $30 \mathrm{~mm} \mathrm{Hg}, \mathrm{P}_{\mathrm{i}}$ is $-2 \mathrm{~mm} \mathrm{Hg}$, $\pi_{\mathrm{c}}$ is $25 \mathrm{~mm} \mathrm{Hg}$, and $\pi_{\mathrm{i}}$ is $2 \mathrm{~mm} \mathrm{Hg}$.
-If $\mathrm{K}_{\mathrm{f}}$ is $0.5 \mathrm{~mL} / \mathrm{min} / \mathrm{mm} \mathrm{Hg}$, what is the rate of water flow across the capillary wall?

Question

Quizplus · Accepted Answer

[VII C 1$]. \mathrm{K}_{\mathrm{f}}$ is the filtration coefficient for the capillary and describes the intrinsic water permeability.
$$\begin{aligned}
\text { Water flow } & =\mathrm{K}_{\mathrm{f}} \times \text { Net pressure } \
& =0.5 \mathrm{~mL} / \mathrm{min} / \mathrm{mm} \mathrm{Hg} \times 9 \mathrm{~mm} \mathrm{Hg} \
& =4.5 \mathrm{~mL} / \mathrm{min}
\end{aligned}$$

In a Capillary Pc\mathrm{P}_{\mathrm{c}}Pc​ Is 30 mmHg,Pi30 \mathrm{~mm} \mathrm{Hg}, \mathrm{P}_{\mathrm{i}}30 mmHg,Pi​ Is −2 mmHg-2 \mathrm{~mm} \mathrm{Hg}−2 mmHg

In a Capillary $\mathrm{P}_{\mathrm{c}}$ Is $30 \mathrm{~mm} \mathrm{Hg}, \mathrm{P}_{\mathrm{i}}$ Is $-2 \mathrm{~mm} \mathrm{Hg}$