Question

how are the alveoli designed to maximize the exchange of gases

Answer 1

In lungs, balloon like structure called alveoli are present that provide maximum surface area for the exchange of gases.The alveoli have very thin walls and contain an extensive network of blood vessel s to facilitate the exchange of gases.

Answer 2

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How are the alveoli designed to maximize the exchange of gases ?

$\bf\huge\underline\purple{Answer}$

The bronchus, within the lungs, divides into smaller and smaller tubes (bronchioles) and finally terminates in balloon-like structures called 'alveoli'.

The alveoli are made up of thin moist membranes which are richly supplied with blood and provide a very large surface area for the gaseous exchange.