KINE 3012 Lecture Notes - Lecture 8: Mount Everest, Hemoglobin, Red Blood Cell
6 Mar 2018
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For the oxygen to go into the red blood cell, the pressure in the alveoli has to be higher than that pressure in the plasma. From the lungs to the erythrocytes, the erythrocyte has the lowest pressure. When the erythrocyte is in the capillaries and trying to get the o2 into the tissue, it now has the highest pressure so that the oxygen di uses into the tissue. At the lung we want to keep dissolved oxygen pressure low. When the blood gets to the tissue we want to keep that dissolved oxygen level high. Two things a ect how much oxygen the blood can carry: total amount of hemoglobin, the pressure between the alveolar and arterial pressure in oxygen. As we increase oxygen pressure, we increase the saturation of oxygen into hemoglobin: hemoglobin has a low a nity for oxygen. Alveolar oxygen at sea level is 100mm of mercury.
