What are alveoli?

Alveoli are small air sacs or cavities present in the lungs of human beings. They are also referred to as pulmonary alveoli. Alveoli are present at the end of the tiny branches of bronchioles, in the lungs.

Alveoli provide the surface within the lungs for the exchange of oxygen and carbon dioxide from blood during the process of breathing in and breathing out.

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Updated on: 06-Apr-2023

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