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Lung Volumes and Capacities

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alexaswailes's version from 2015-04-14 20:18

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Question Answer
Tidal Volumeamount of air inhaled and exhaled during normal resting breathing
Residual Volumevolume of air remaining in lungs following maximal expiration
expiratory reserve volumevolume of air that can be forcefully expelled following a normal expiration
inspiratory reserve volumevolume of air that can be forcefully breathed in following a normal inspiration
forced vital capacityamount of air that is under volitional control
Equation: FVC=?FVC = IRV + TV + ERV
Forced expiratory volume (FEV1)volume of air that can be forcefully expelled in 1 second following a full inspiration
Normal value of FEV1/FVC75%
Equation: Total Lung CapacityRV + FVC
Functional Residual Capacityvolume of air remaining in the lungs following normal respiration
Equation: FRC = ERV + RV
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