During expiration,the diaphragm becomes

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(C) Expiration is the process by which $CO_{2}$ is expelled from the lungs.During this process,the muscle fibres of the diaphragm relax,causing it to

Vedclass · Accepted Answer

Dome-shaped

Vedclass · Answer

(C) Expiration is the process by which $CO_{2}$ is expelled from the lungs.During this process,the muscle fibres of the diaphragm relax,causing it to return to its original dome-shaped structure.This relaxation decreases the volume of the thoracic cavity,which increases the pressure inside the lungs,forcing air out.

Similar Questions

Select the correct statement.

Explain the mechanism of expiration.

In mammals,the ventilation movements of the lungs are governed by:

The normal shape of the diaphragm is

Assertion : Inspiration occurs due to muscular relaxation.
Reason : During inspiration,the diaphragm and external intercostal muscle contract simultaneously.

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