What is the function of sac like structures present at the end of bronchioles?

Protection of lungs

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Protection from bacteria

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Exchange of respiratory gases

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Storage of respiratory gases

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Solution

The correct option is C Exchange of respiratory gases
Alveoli or air sacs are present at the end of bronchioles. They provide a surface where the exchange of gases can take place. The walls of the alveoli contain an extensive network of blood vessels. Alveoli helps in the exchange of gases.

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