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Question
During respiration, the exchange of gases takes place in:
Options
Bronchi
Alveoli
Bronchioles
Trachea
Solution
Alveoli
Alveoli are the pouch-like air sacs at the end of the small bronchioles. The walls of the alveoli are very thin. Also, they are surrounded by very thin blood capillaries. It is in the alveoli that the gaseous exchange takes place.
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