1. The problem statement, all variables and given/known data a person is 1.8 m tall, standing upright. His heart is 1.4m above his feet. He is doing a head stand. Calculate the hydrostatic blood pressure in (a) his feet and (b) his head. 2. Relevant equations P-Po= density x g x d 3. The attempt at a solution When standing upright: Brain Pheart-Pbraind=1059.5 x 9.81 x 0.4 13500-Gauge P in brain= 9.3 KPa Feet Pfeet-Pheart=1059.5 x 9.81 x 1.4 feet-13500=1059.5 x 9.81 x1.4 P feet= 28 KPa How do I know what distance to use when he is upside down? You would think these numbers would just be opposite?