A Flow volume curve is Graph of instantaneous forced expiratory flow recorded at the mouth, against corresponding lung volume. When recorded over the full vital capacity, the curve includes maximum expiratory flow rates at all lung volumes in the VC range and is called a maximum expiratory flow-volume curve (MEFV). A partial expiratory flow-volume curve (PEFV) is one which describes maximum expiratory flow rate over a portion of the vital capacity only.

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vital capacity at psychology-glossary.com■■■■■■■
The term vital capacity (VC) specifies the volume of air that can be moved into or out of the lungs in . . . Read More
Maximum expiratory flow (Vmax x) ■■■■■■
A Maximum expiratory flow (Vmax x) is Forced expiratory flow, related to the total lung capacity or the . . . Read More
Forced expiratory volume (FEV) ■■■■■
A Forced expiratory volume (FEV) is Denotes the volume of gas that is exhaled in a given time interval . . . Read More
Maximum breathing capacity (MBC) ■■■■
A Maximum breathing capacity (MBC) is Maximal volume of air that can be breathed per minute by a subject . . . Read More
Total lung capacity (TLC) at psychology-glossary.com■■■■
Total lung capacity (TLC) refers to the total volume of air the lung can contain; equal to the sum of . . . Read More
FIVC ■■■■
A FIVC is Forced inspiratory vital capacity; - - Forced inspiratory vital capacity (FIVC) is a measure . . . Read More
Inspiratory vital capacity (IVC) ■■■■
. . . Read More
Forced vital capacity (FVC) ■■■
A Forced vital capacity (FVC) is Vital capacity performed with a maximally forced expiratory effort. . . . Read More
Forced expiratory flow (FEFx) ■■■
A Forced expiratory flow (FEFx) is Related to some portion of the FVC curve. Modifiers refer to the amount . . . Read More
FEF200-1200 ■■■
FEF200-1200 mean forced expiratory flow between 200 ml and 1200 ml of the FVC (formerly called the maximum . . . Read More