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Respiratory Physiology: Gas Flow Patterns & Mechanisms of Breathing

Explore lectures on respiratory physiology, including gas flow patterns in tubes, Poiseuille equation, Reynolds number, and lung volume effects on airway resistance and flow-pressure curves. Learn about dynamic compression mechanisms and work done on the lung during breathing.

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Respiratory Physiology: Gas Flow Patterns & Mechanisms of Breathing

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Presentation Transcript

  1. Mechanics of Breathing II Lectures on respiratory physiology

  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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