Physiology of Respiration 2/11/13
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Tidal Volume: The volume of air exchanged in one cycle of respiration.
Inspiratory Reserve Volume: The volume of air that can be inhaled after a tidal inspiration.
Expiratory Reserve Volume: The volume of air that can be expired after a tidal expiration.
Residual Volume: The volume of air remaining in the lungs after maximum exhalation.
The volume of air within the conducting passageways that can't be involved in gas exchange (included as a component of residual volume).
Vital Capacity: The volume of air that can be inhaled following a maximal exhalation. It represents the capacity available for speech. (IRV + ERV + TV = VC).
Functional Reserve Capacity: The volume of air remaining in the body after a passive exhalation. (ERV + RV = FRC)
Total Lung Capacity: The volume of air that is involved in a maximal respiratory cycle. (TV + IRV + ERV + RV = TLC).
Inspiratory Capacity: The maximum inspiratory volume of air that is possible after tidal expiration. (TV + IRV)
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