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Why doesn’t the lungs collapse even after forceful expiration

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Our lungs does not collapse even after forceful expiration because  they do not ever full or empty of air completely. There will always be a small amount of air that will  remain in the lungs no matter how hard we try to expel air out of them via forceful expiration.

 

 

 

 

 

 

 

 

Posted by

Ritika Jonwal

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