: 1. A man has an anaphylactic allergic reaction. As a result, his blood pressure drops throughout his body. His main pulmonary artery pressure (MPAP)

: 1. A man has an anaphylactic allergic reaction. As a result, his blood pressure drops throughout his body. His main pulmonary artery pressure (MPAP) is reduced from normal 34/11 (systole/diastole) to 28/8 cmH,0 and his left atrial (LA) pressure is reduced from normal 5 to 2 cmH,0. In a capillary at the same level as the heart, pressure at the upstream, arteriolar end is 15/6 cmH,0 and pressure at the downstream, venular end is 4 cmH,O. When one is standing, the lungs have a total height of 30 cm and the heart is located 10 cm above the base (bottom) of the lungs. a. For the case of the man with the anaphylactic reaction, draw a schematic of his lungs and indicate for systole/diastole, relative to the height of his heart, where flow conditions are in zone I, II or III. b. For the top two regions that you demarcate in the lungs, describe the flow conditions.