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Lung Capacities

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Elizabeth Hodgdon

on 5 March 2015

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Transcript of Lung Capacities

Expiratory Reserve Volume (ERV)
The amount of air that can be forcibly exhaled following a quiet or passive exhalation
Residual Volume (RV)
The quantity of air that remains
in the lungs and airways even after
a maximum exhalation
Tidal Volume (TV)
The volume of air inhaled and exhaled during any single expiratory cycle
Inspiratory Reserve Volume (IRV)
The quantity of air which can be inhaled beyond that inhaled
in a tidal volume cycle

Tidal Volume at rest ~ 750cc
Engaged in light work ~ 1670cc
During heavy work ~ 2030 cc
Lung Volume
The volume of air within the lungs while breathing

Measured in cubic centimeters or milliliters
Young Adult Male
This is also known as resting lung volume (RLV)
Residual Air
We cannot speak on residual air
Lung Volumes
Elizabeth Hodgdon, Marnie Luxford & Arlene Nolasco
Dead Air
~ 150 cc of our residual air neither contributes oxygen to the blood nor receives carbon dioxide from it
Dead air spaces:
nasal cavities
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