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What is the effect of pCO2 on oxygen transport?
This is called the Bohr effect where a increase in pC02 which decrease the pH leads to a decreased affinity of hemoglobin to oxygen. This means that hemoglobin unloads oxygen in areas where pC02 is high e.g. active tissue and that the binding coefficient of hemoglobin is highest in the lung where pC02 is negligible.
What does a high PC02 indicate?
It means you have a high amount of carbon dioxide in your blood! Can be caused by shallow breathing or panting like during a panic attack or due to an environment where chemicals or gases remove oxygen from the air!
A breathing mixture used by deep-sea divers contains helium oxygen and carbon dioxide What is the partial pressure of oxygen at 1 atmosphere if P He- 609.5 mm Hg and PC02 equals 0.5 mm Hg?
To find the partial pressure of oxygen, you can subtract the partial pressures of helium and carbon dioxide from the total pressure of 1 atmosphere (760 mm Hg). Partial pressure of oxygen = Total pressure - Partial pressure of helium - Partial pressure of carbon dioxide = 760 mm Hg - 609.5 mm Hg - 0.5 mm Hg = 150 mm Hg.
