Question

Define vital capacity. what is it's significance?​

Answer 1

Answer:

Vital capacity is the maximum volume of air that can be exhaled after a maximum inspiration. It is about 3.5 – 4.5 litres in the human body. It promotes the act of supplying fresh air and getting rid of foul air, thereby increasing the gaseous exchange between the tissues and the environment.

Explanation:

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Answer 2

Answer:

Vital capacity is the amount of air which can be exhaled from the lungs after first filling the lungs to the maximum.