Question

Why is alveoli covered with blood capillaries

Answer 1

$\huge\bold\red{HOLA!!}$

Alveoli is covered with blood capillaries to make the diffusion of gases easy.

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Answer 2

heya mate ur answer

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alveoli are sad like structures which are approx millions in number . there is exchange of oxygenated and deoxygenated blood here,,, indirectly saying changing of partial pressure of gasses which can't possible without blood hence they are covered by blood capillaries

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