Question

Why doesn't the lungs collapse after forceful expiration?

Answer 1

The lungs does not collapse after forceful expiration because it is not empty no matter how forcefully the air is exhaled.

Explanation:

The reserve volume is the amount of air which is is left in the lungs when air is exhaled.

The amount of volume that is left in the lungs after expiration does not allows the lungs to collapse.

It is the minimal amount of air which is left over in the lungs, it also provides oxygen to the cells and prevents from deflating and collapsing.

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Answer 2

Explanation:

. The lungs do notcollapse even after forceful expiration as thelungs never become empty. There is always some amount of air left in the lungs which is known as residual volume.