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Lectures on respiratory physiology Mechanics of Breathing II.

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Presentation on theme: "Lectures on respiratory physiology Mechanics of Breathing II."— Presentation transcript:

1 Lectures on respiratory physiology Mechanics of Breathing II

2 Patterns of gas flow in tubes

3 Poiseuille equation for laminar flow

4 Patterns of gas flow in tubes

5 The Reynolds number

6 Pressures during the breathing cycle

7 Number of airways increases rapidly with generation

8 Most resistance is in the medium sized airways

9 Airway resistance falls with increasing lung volume

10 Flow – volume curves

11 Isovolume pressure-flow curves

12 Mechanism of dynamic compression

13 Flow – volume curves

14 Flow through collapsible tubes

15 Mechanism of dynamic compression

16 Work done on the lung during breathing


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