First slide

Mechanism of Breathing

Question

The maximum volume of air a person can breathe in after a forced expiration is known as :

Easy

A

Expiratory Capacity
B

Vital Capacity
C

Inspiratory Capacity
D

Total lung Capacity

Solution

Vital Capacity (VC) is the maximum volume of air a person can breathe in after a forced expiration. It can also be defined as the maximum volume of air a person can breathe out after a forced inspiration. VC = ERV + TV + IRV.
Expiratory Capacity(EC) is total volume of air a person can expire after a normal inspiration.
Inspiratory Capacity(IC) is a total volume of air a person can inspire after a normal expiration.
Total Lung Capacity(TLC) is the total volume of air accomodated in the lungs at the end of forced inspiration.

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