Question

why are lungs divided into very small sac like structures​

Answer 1

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why are lungs divided into very small sac like structures??

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⭕️Lungs are divided into small sac like structures called alveoli to increase the surface area for exchange of gases between lungs and blood.

⭕️Lungs are divided into bronchitis and then further divided into bronchioles.

⭕️These bronchioles* are further divided into small sac like structures called as alveoli**

⭕️carbon dioxide forms impure blood.

So it's brought to lungs and this will be getting replaced with oxygen and this oxygen is absorbed by capillaries*** that are present at the surface of the alveoli and then circulated in the body through blood.

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Answer 2

Answer:

Lungs are divided into small sac like structures called alveoli to increase the surface area for exchange of gases between lungs and blood

Explanation:

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