Question

7. How are lungs designed to maximise the area for exchange of gases?​

Answer 1

Answer:

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Explanation:

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Answer 2

Explanation:

human lungs have highly branched network of respiratory tubes a primary bronchus divides into secondary bronchi which in turn form tertiary bronchi . Tertiary bronchi divide repeatedly into bronchioles which finally terminate into alveoli. alveoli have extremely thin wall and posses a network of capillaries foot the exchange of gases it provides a vast area for or this purpose.