Question

What are alveoli? Mention it's 3 functions.

Answer 1

Explanation:

Alveoli are an important part of the respiratory system whose function it is to exchange oxygen and carbon dioxide molecules to and from the bloodstream. These tiny, balloon-shaped air sacs sit at the very end of the respiratory tree and are arranged in clusters throughout the lungs.

There are three major types of alveolar cell. Two types are pneumocytes or pneumonocytes known as type I and type II cells found in the alveolar wall, and a large phagocytic cell known as an alveolar macrophage that moves about in the lumens of the alveoli, and in the connective tissue between them

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Answer 2

Answer:

• Alveoli are an important part of the respiratory system whose function it is to exchange oxygen and carbon dioxide molecules.

• It exchanges them to and from the bloodstream.

• These tiny, balloon-shaped air sacs sit at the very end of the respiratory tree.

• They are arranged in groups throughout the lungs.
• Their main function is to exchange gases.

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