Question

how are lungs designed for gaseous exchange​

Answer 1

hello!!

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✴your answer:-⤵⤵

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✔➡The interior of lungs are provided with many ballon like tiny structures called alveoli.

✔➡These provide a surface where exchange of gases can take place.

✔➡ The walls of alveoli show an extensive network of blood vessels.

✔➡There are about 300 million alveoli in each lung.

✔➡these alveoli maximise area for exchange of gasses.

✴we can also say that✴

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➡The structure of lungs in a human body is designed to maximize and help to the exchange of gases.

➡Alvoli are present on every nerve ending which helps to increases the area of the lungs as well as exchange of gases.

➡ These alvoli are in millions of numbers. we can't count

➡The exchange of gases and completly breathing process occurs mainly help through them.

hope it will help u!!

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 .