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Which structure of the lungs is directly...

Which structure of the lungs is directly involved in `O_(2)//CO_(2)` exchange between air and blood capillary?
(A) Bronchi
(B) Trachea
(C) Alveoli
(D) Secondary bronchi

A

Bronchi

B

Trachea

C

Alveoli

D

Secondary bronchi

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