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Double Circulation

What is the f...

Question

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

A

Storage of respiratory gases

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B

Exchange of respiratory gases

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C

Protection of lungs

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D

Protection from bacteria

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Solution

The correct option is B
Exchange of respiratory gases

Alveoli are the air sacs that are present at the end of bronchioles. Gas exchange of oxygen and carbon dioxide takes place in the alveoli. Oxygen from the inhaled air diffuses through the walls of the alveoli and adjacent capillaries into the red blood cells. The oxygen is then carried by the blood to the body tissues.

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

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Provides actual diffusion of respiratory gases in lungs.

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

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