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Lung volumes and capacities
from handout
8
Anatomy
Undergraduate 3
04/04/2013

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Term
Tidal Volume (TV):
Definition
The volume of air breathed in and out without conscious effort
Term
Inspiratory Reserve Volume (IRV):
Definition
The additional volume of air that can be inhaled with maximum effort after a normal inspiration
Term
Expiratory Reserve Volume (ERV):
Definition
The additional volume of air that can be forcibly exhaled after normal exhalation
Term
Vital Capacity (VC):
Definition
The total volume of air that can be exhaled after a maximum inhalation: VC = TV + IRV + ERV
Term
Vital capacity = ? + ? + ?
Definition
VC = TV + IRV + ERV
Term
Residual Volume (RV):
Definition
The volume of air remaining in the lungs after maximum exhalation (the lungs can never be completely emptied)
Term
Total Lung Capacity (TLC):
Definition
= VC + RV
Term
Minute Ventilation:
Definition
The volume of air breathed in 1 minute: (TV)(breaths/minute)
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