BIO Standing on Your Head. ?(a) What is the difference between the pressure of the blood in your brain when you stand on your head and the pressure when you stand on your feet? Assume that you are 1.85 m tall. The density of blood is 1060 kg/m3. (b) What effect does the increased pressure have on the blood vessels in your brain?

Solution 13E Step 1: The equation for the hydrostatic pressure, P = gh Where, - Density of the liquid g - Acceleration due to gravity h - Height of the liquid column Step 2: a) When the person is standing on the feet, there will be a difference in the hydrostatic pressure. The height of the person is, h = 1.85 m Provided, the density of blood, blood1060 kg/m 3 Then, the hydrostatic pressure of blood at brain, P = × g × h brain blood That is, P = 1060 kg/m × 9.8 m/s × 1.85 m = 19218 Pa = 19.2 kPa brain