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Mechanics of Breathing - Part 2
Charles L. Webber, Jr., Ph.D.

Loyola University Medical Center


Learning Objectives: You should be able to:

Rhoades & Tanner Text Readings: Chapter 19, Pages 352-362

 

Airflow Profiles       Dynamic Compression      Air-Flow Resistance         Work of Breathing       MainMenu

 

Air Flow Profiles in the Airways
  1. Cross-Sectional Area of the Airways

     

  2. Three Types of Air-Flow Profiles

Airflow Profiles       Dynamic Compression      Air-Flow Resistance         Work of Breathing       MainMenu

 

Dynamic Compression of the Airways
  1. Flow-Volume Loops

     

     

  2. Dynamic Compression of the Airways

Airflow Profiles       Dynamic Compression      Air-Flow Resistance         Work of Breathing       MainMenu

 

 

Four Factors Affecting Air-Flow Resistance

  1. Airway Caliber

     

  2. Air-Flow Profile

     

  3. Airway Generation

     

  4. Lung Volume

Airflow Profiles       Dynamic Compression      Air-Flow Resistance         Work of Breathing       MainMenu

 

Work of Breathing

  1. Components of Work

     

  2. Graphical Representation of the Major Components of Work

     

  3. Work of Breathing in Disease (Fig. 12)

Airflow Profiles       Dynamic Compression      Air-Flow Resistance         Work of Breathing       MainMenu