In this article we will discuss about:- 1. Definition of Alveolar Air 2. Method of Collecting Alveolar Air 3. Composition 4. Partial Pressure of Gases 5. Tension of Gases 6. Method of Measurement 7. Effects 8. Factors 9. Alveolar PO2 and Venous Admixture. Definition of Alveolar Air: Alveolar air represents the air located in the respiratory part of the lungs [...]
In this article we will discuss about the mechanism of formation of CO2 with the help of suitable diagrams. We have seen that hydration of CO2 occurs in the blood and the mechanism can be represented as CO2 + H2O ↔ H++ HCO3. Further the H+ is buffered by reduced Hb within the RBC and by plasma buffers outside the [...]
In this article we will discuss about:- 1. Meaning of Diffusion 2. Factors Controlling Diffusion 3. Diffusing Capacity for O2 and CO2. Meaning of Diffusion: Diffusion means movement of a substance from an area of high concentration to an area of low concentration. In the present context the diffusion of O2 from alveoli to pulmonary capillaries and of CO2 in [...]