Question

How are lungs designed to maximise the exchange of gases 0?

Answer 1

Answer:

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The trachea divides into bronchi which enter the lungs.In the lungs,the bronchi divides into smaller tubes called bronchioles which finally terminate in balloon like structures called alveoli...

These alveoli provide a large surface area where exchange of gases take place.The walls of alveoli contain an extensive network of blood vessels for easy exchange of gases...

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Answer 2

Within the lungs , the air passage

divides into smaller and smaller tubes

called bronchi which in turn form

bronchioles . The bronchioles terminate

in balloon-like structures called alveoli .

The alveoli present in the lungs provide

maximum surface for exchange of gases .

The alveoli have vary thin walls and

contain an extensive network of blood

vessels to facilitate exchange of gases .