PhysioEx 7 - PhysioEx 7: Respiratory System Mechanics...

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PhysioEx 7: Respiratory System Mechanics Expiration is passive except when running, external intercostals muscles contract and make thoracic cavity even larger & expiration is result of internal intercostals muscles contracting- both in/expiration are active Tidal volume: frequency of breathing multiplied by volume of each breath Inspiratory reserve volume: tidal volume and then breath in as much air as possible Expiratory reserve volume: tidal volume and then breath out as much air as possible Vital capacity: tidal volume + Inspiratory and expiratory reserve volume Residual volume (rv): air remaining in lungs after complete exhalation Total lung capacity: vital capacity + residual volume Forced vital capacity (FVC): amount of air expelled completely and as rapidly as possible after taking the deepest possible breath- test of spirometer Forced expiratory volume (FEV 1 ): percentage of vital capacity exhaled during 1-sec of FVC test Spirometer: records respiratory volumes
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This note was uploaded on 04/04/2011 for the course PHYSIOLOGY 200 taught by Professor Kee during the Winter '10 term at Waterloo.

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PhysioEx 7 - PhysioEx 7: Respiratory System Mechanics...

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