Alveoli are highly infolded in human beings.give reason
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The alveoli are adapted to make gas exchange in lungs happen easily and efficiently. ... they give the lungs a really big surface area. theyhave moist, thin walls (just one cell thick) theyhave a lot of tiny blood vessels called capillaries.
darshu25:
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Ur answer absolutely right...
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ANSWER:
Alveoli is a balloon-shaped air sac present in a respiratory system that helps in exchanging oxygen and carbon dioxide and contracts to pull ribcage upwards and downwards during inhaling.
EXPLANATION:
As it plays a vital role in inhaling air by means of lungs, it is an important part in the whole respiratory system. Its main purpose is to exchange the gases and it has network comprising of blood vessels that helps to perform this function.
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