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 [...]
The expansion of the lungs during inspiration follows the enlargement of the thoracic cavity in all its diameters by the contraction of the respiratory muscles. These are mentioned below: 1. Diaphragm: A dome-shaped muscle separating the abdominal wall from the thoracic cavity, with vertically running fibres at the periphery and horizontally running fibres at the centre ending in the central [...]