EXHALATION
RV residual volume
Air left in the lungs after
maximum exhalation.
INHALATION
IC inspiratory capacity
Amount of air you can inhale
after a normal exhalation.
FRC Functional Residual
Capacity
Air left in the lungs after
normal exhalation.
MVV maximal voluntary
ventilation
Greatest amount of air you can
breathe in 12 to 15 sec.
TLC
Largest amount of air the
lungs can hold
IRV inspiratory reserve vol
Amount of air you can inhale
after a normal inspiration.
Vt tidal volume
Volume inspired with a
normal breath.
ERV expiratory reserve vol
Amount of air you can exhale
after a normal exhalation.
PEF peak expiratory flow
rate (PEFR)
Fastest flow rate generated at
the very beginning of forced
exhalation.
VC Vital Capacity
Amount of air you can exhale
after a maximum inspiration.
FEV1 Forced expiratory
volume
Volume of air you can
forcefully exhale in 1 sec.
exhalation.
FVC forced vital capacity
Amount of air you can
forcefully exhale after a
maximum inspiration.
FEV1 (vol exh)/FVC
Ratio(total vol)
Ratio of volume exhaled in 1
second to total volume
exhaled.
Lung Volume Chart
A. Total lung capacity 6L
B. Vital capacity 4.8L
C. Inspiratory capacity 3.6L
D. functional residual capacity
2.4L
FEF 25-75% Forced
expiratory flow
Average expiratory flow during
the middle part of forced
exhalation.
FEF 200-1200 forced
expiratory flow
Average expiratory flow during
the early part of forced
exhalation
POTAT
DL
Milliliters of gas the lung
can transfer to the blood
E. Inspiratory reserve
volume 3.10L
F. tidal volume 0.50L
G. Expiratory reserve
volume 1.20L
H. Residual volume 1.20 L