Question

tell me about the alveoli

Answer 1

Hey mate,

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Alveoli are tiny balloon shaped structures and are the smallest passageway in the respiratory system. The alveoli are only one cell thick, allowing the relatively easy passage of oxygen and carbon dioxide between the alveoli and the capillary. One cubic millimeter contains 170 alveoli and the area of alveoli is on average 70 square meters. The number of alveoli differs between people and larger lungs have more alveoli.

The function of the alveoli is to get oxygen into the blood stream for transport to the tissues, and to remove carbon dioxide from the blood stream.

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