01:146:356 Lecture Notes - Lecture 9: Grater, Homeostasis, Cardiac Output

• School: Rutgers University
• Department: Cell Biology and Neuroscience
• Course: 01:146:356
• Professor: Roseli Golfetti

Document Summary

Illustrations of static vs. dynamic components of the respiratory cycle. (all pressures are expressed in cm h2o) know the whole slide! Basically he tells you what to figure out on your own. Denote the size of the alveolus in inspiratory/expiratory phase. The arrows pointing from various illustrations emphasize changes within the alveolus during inspiration. Top to bottom: change in lung volume, change in pressure both trans-pulmonary purple and interpleural green, alveolar pressure, and their flow. *inspiratory phase of a respiratory cycle* not expiratory. Difference between static and dynamic phase of inspiration. Where the curves are not changing are in static: take home message: change in interpleural pressure (purple line) i. e. becoming more negative during inspiration, is what creates a negative alveolar pressure. While that alveolar pressure is negative, air can flow. Lung volume increases from it"s functional residual capacity by about 42-45 l o. 0.