How is human lungs designed for maxium exchange of gasses
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Lungs are designed in such a way that they are lined by a thin membrane to facilitate the exchange of gases. ... In the lungs, the bronchioles terminate in a balloon like structure called alveoli.the alveoli contain network of blood capillaries that increase the surface area for exchange of gases.
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n the lungs, the air passage (wind pipe) divides into smaller tubes, called ‘bronchi’ in turn form ‘bronchioles’. The bronchioles which terminate in balloon – like structures, are called ‘alveoli’. Each lung contains 300 – 350 million alveoli. The alveoli present in the lungs provide maximum surface for exchange of gases. The alveoli have very thin walls and contain an extensive network of blood vessels to facilitate exchange of gases.
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♤ In the lungs, the air passage that divides into smaller and smaller tubes called bronchi which form bronchioles .
♤ The bronchioles terminate in the balloon like structure called alveoli.
♤ The alveoli present in the lungs provide maximum surface for exchange of gases.
♤ The alveoli have very thin walls and contain an extensive network of blood vessels to facilitate exchange of gases.
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