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Gas Exchange in Lungs Prof. K. Sivapalan. Properties of Gases 20132Gas Exchange.

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Presentation on theme: "Gas Exchange in Lungs Prof. K. Sivapalan. Properties of Gases 20132Gas Exchange."— Presentation transcript:

1 Gas Exchange in Lungs Prof. K. Sivapalan

2 Properties of Gases 20132Gas Exchange

3 Water Vapor Pressure 20133Gas Exchange

4 Diffusion of Gases in Liquids 20134Gas Exchange

5 Diffusion of Different Gases Oxygen1.0 Carbon Dioxide20.3 Carbon Monoxide0.81 Nitrogen0.53 Helium0.95 Gas Exchange

6 Partial Pressures 20136Gas Exchange

7 Oxygen and Carbon dioxide in Expired air 20137Gas Exchange

8 Alveolar Gas Concentration 20138Gas Exchange

9 Respiratory Unit 20139Gas Exchange

10 Respiratory Membrane A layer of fluid lining the alveolus Alveolar epithelium Epithelial basement membrane Interstitium Capillary basement membrane Capillary endothelium Plasma and red cell 0.6 µ, 70 M 2, 60 – 140 ml of blood Gas Exchange

11 Diffusing Capacity Gas Exchange

12 Partial Pressure Difference across respiratory membrane Gas Exchange

13 Factors Affecting Gas Exchange Gas Exchange


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