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  4. Which of the following sets of options depicts the total volume of air accommodated in the lungs at the end of a forced inspiration and the expression to calculate the same?

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Q. Which of the following sets of options depicts the total volume of air accommodated in the lungs at the end of a forced inspiration and the expression to calculate the same?

NTA AbhyasNTA Abhyas 2020Breathing and Exchange of Gases

Solution:

Respiratory capacities are the sum of two or more respiratory volumes. These are as follows.Total lung capacity: It is the total volume of air present in the lungs after maximum inspiration. It includes all the volumes. Expiratory capacity: It is the amount of air expired normally and forcefully. It includes Tidal volume and Expiratory reserve volume. Inspiratory capacity: It is the amount of air inspired normally and forcefully. It includes Tidal volume and Inspiratory reserve volume. Vital capacity: It is the total volume of air a person can breathe in or out after forceful expiration or after forceful inspiration. This includes tidal volume and inspiratory and expiratory reserve volume.