Question:
How are the alveoli designed to maximise the exchange of gases?
How are the alveoli designed to maximise the exchange of gases?
Updated On: Jan 13, 2026
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Solution and Explanation
The alveoli are the small balloon-like structures present in the lungs. The walls of the alveoli consist of an extensive network of blood vessels. Each lung contains 300−350 million alveoli, making it a total of approximately 700 million in both lungs. The alveolar surface when spread out covers about 80 m2 area. This large surface area makes the gaseous exchange more efficient.
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