1. Tardigrade
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  3. Biology
  4. Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

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Q. Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

NEETNEET 2017Breathing and Exchange of Gases

Solution:

Volume of air present in lungs after forceful expiration as residual volume which prevents the collapsing of alveoli even after forceful expiration.