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What is ventilation
movement of air exchanged in the pulmonary system
what is tidal volume
amount of air that is inhaled and exhaled during normal breathing
what is residual volume (RV)?
volume of air remaining in the lungs following a full or maximal expiration
what is expiratory reserve volume?
volume of air that can be forcefully expelled following a normal expiration
what is inspiratory reserve volume
volume of air that can be forcefully breathed in following a normal inspiration
what is forced vital capacity?
the amount of air that is under volitional control
FVC = IRV + TV+ ERV
What is forced expiratory volume?
FEV1: volume of air that can be forcefully expelled in 1 sec following a full inspiration
Normally at least 75% FVC is exhaled within 1st second
what is total lung capacity?
the sum of the residual volume and the forced vital capacity (TV + IRV +ERV + RV)
WHAT IS functional residual capacity?
the volume of air remaining in the lungs following a normal expiration (ERV + RV)
draw graph of lung volumes
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