PHGY 214 Lecture Notes - Lecture 6: Myoglobin, Partial Pressure, Hemoglobin
12 May 2016
School
Department
Course
Professor
Document Summary
Transport of o2 and co2 by blood: explain why an o2 binding compound is needed to transport o2. Very little oxygen dissolves in plasma water because it is poorly soluble. Amount dissolved is directly proportional to the po2 of the blood (3ml o2/l: describe the forms in which o2 and co2 are transported by the blood. Around 1. 5% is physically dissolved into the plasma blood. Hemoglobin carried around 98. 5% of the oxygen into the blood. Co2 is mostly transported as bicarbonates (hco3-) 7% is physically dissolved into the blood. 23% is bound to hemoglobin as hbco2: indicate graphically or in words the relation between po2 and both the saturation of hemoglobin and the o2 content of arterial blood. Hemoglobin can carry up to 4 oxygen molecules. The percent hemoglobin saturation is a measure of the extent to which the variable hemoglobin is combined with oxygen. The most important factor in determining saturation is the po2 of the blood.
