1. Respiration #2

2. Airway Resistance Airflow =  Pressure / Resistance remember resistance and radius the most important factor contributing to airway resistance is the radius of the airway –implications for exercise (asthsma, bronchitis)

3. Pulmonary Ventilation V denotes volume V denotes volume per unit time (minute) subscripts –T - tidal –D - dead space –A - alveolar –I - inspired –E - expired

4. Minute volume –V = V T x f Dead space ventilation (V D ) –air that remains in conducting passages –does not participate in gas exchange –anatomical dead space area V D occupies Alveoloar ventilation (V A ) –inspired gas that reaches the respiratory zone

5. Spirogram at Rest

6. Vital capacity –the maximum amount of gas that can be expired after a maximal inspiration Residual Volume –amount of gas left in the lungs after a maximal expiration

7. Vital capacity –the maximum amount of gas that can be expired after a maximal inspiration Residual Volume –amount of gas left in the lungs after a maximal expiration

8. Partial Pressures

9. Partial Pressures of Gases in the Blood