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Lecture 6: Respiratory Volumes
Terms in this set (27)
What is used to assess a person's respiratory status?
Page 829 figure 22.18
How is respiratory volume(s) measured?
with a spirometer
What is the tidal volume (TV)?
the volume of air inhaled/exhaled with a normal breath
What is Inspiratory Reserve Volume (IRV)?
the volume of air that can be forcefully inhaled after a normal tidal volume inhalation (you take in extra air above the normal inhale)
What is Expiratory Reserve Volume (ERV)?
the volume of air you can forcefully exhale after a normal tidal volume exhale.
What is Residual volume (RV)?
the volume of air remaining in the lungs after a forced exhalation (never rid of).
combination of lung volumes
What is dead space?
air volume in the lungs that is never used for gas exchange; space inside bronchial passages; nonfunctional alveoli
What is the total lung capacity (TLC)?
the total volume of all air in the lungs (maximum)
TLC = TV + IRV + ERV + RV
What is Vital capacity (VC)?
maximum amount of air that can be exhaled after a maximum inspiratory effort; maximum exhale followed by a maximum inhale.
VC = TV+IRV+ERV
Vital refers to __.
What is Inspiratory capacity (IC?
maximum amount of air you can take in after a normal exhale
IC = TV + IRV
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