What is the difference in blood pressure (mm−Hg) between the top of the head and bottom of the feet of a 1.82m tall person standing vertically?

Answer 1

assuming blood is water, the pressure of a column of water 1.82 meters is

1041kg/m^3*1.82m*9.8N/kg=18.6kPa-18.6/101.3 * 760 mmHg