Chapter 14, Problem 66RPP

To determine

The pressure drop across a group of capillaries, if they produce about 25% of the total resistance to blood flow $\left(1.25\frac{\text{mm Hg}}{{\text{cm}}^{\text{3}}\text{/s}}\right)$ in a human circulatory system from the given options. The heart pumps about $80{\text{ cm}}^3\text{/s}$ of blood into aorta, the total pressure drop across the circulatory system is $100\text{ mm Hg}$, and the approximate pressure drop across each of aorta, arteries, capillaries, venules, veins, and vena cava is given in the figure.

(a) $\text{5 mm Hg}$

(b) $15\text{ mm Hg}$

(c) $\text{25 mm Hg}$

(d) $\text{35 mm Hg}$

(e) $\text{45 mm Hg}$