Biology, asked by rushnakhan90, 10 months ago

"Explain why alveoli in the lungs have large surface area and many blood capillaries surrounding them?"

Answers

Answered by S0011
18

Answer:

Alveoli in the lungs have large surface area and many blood capillaries surrounding them because when the alveoli expands, it makes a total surface area of 80m² which makes it very efficient to exchange gases.

And the blood vessels make the absorption of O2 and release of CO2 easier.

Answered by marwaguls
7

Answer:

The alveoli provides a large surface for the exchange of gases between the blood and the air. Each alveolus is surrounded by many capillaries {tiny blood vessels}. The very thin walls and large surface area of the alveoli and numerous capillaries surrounding them enable gases to be exchanged quickly and effectively.

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