PHYSL214 Lecture Notes - Lecture 18: Fick Principle, Venous Blood, Partial Pressure

• School: University of Alberta
• Department: Physiology
• Course: PHYSL214
• Professor: Jamie Mitchell

Document Summary

Bound to hemoglobin (~98%: o2 transport in blood - dissolved, content of arterial [o2] dissolved (ml o2/dl blood) = o2 capacity of hb (ml o2/g. Hb) x hb content of blood (g hb/dl blood) x %saturation of hb (o2 bound to. Atpase pumps require o2 still: o2 transport in blood - hemoglobin. [o2] arterial = 1. 35 ml o2/g hb x 15 g hb/dl blood x 98% = 20. 3 ml/dl: will not ask for calculations, venous o2 content. [o2] venous = 1. 35 x 15 x 75% [o2] venous = ~15 ml/dl: fick principle, vo2 = blood flow x (ao2 - vo2) = 5000 ml/min x (20. 3 ml/dl - 15 ml/dl) Co2 diffuses into the plasma from the tissues: there are 2 different ways it moves around the periphery, a. nominal amount stays in plasma and dissolves, 50% dissolves ii. 50% form bicarbonate hydrogen ions.