Select the correct option for the given figur | vedclass

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(D) Step $1$: During expiration, the diaphragm and external intercostal muscles relax.Step $2$: This relaxation causes the diaphragm to return to its

Vedclass · Accepted Answer

All of the above.

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(D) Step $1$: During expiration, the diaphragm and external intercostal muscles relax.Step $2$: This relaxation causes the diaphragm to return to its dome-shaped position, which reduces the volume of the thoracic cavity.Step $3$: $A$ decrease in thoracic volume leads to an increase in intra-pulmonary pressure, forcing air out of the lungs.Step $4$: Since all the given statements describe the events occurring during expiration, the correct option is $D$.

Select the correct option for the given figure, assuming the figure shows the process of expiration.

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