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What is the role of pleural membranes ?...

What is the role of pleural membranes ?

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These membranses secrete pleural fluid in the pieural cavity which reduces the friction on the lung surface .
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  13. How can you estimate the value of functional residual capacity (FRC) ?

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  18. What is the thickess of diffusion membrane ?

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  19. How many layers form the diffusion membrane ?

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  20. Why is CO(2) gas transferred from alveoil the atmospheric air ?

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