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प्रश्न
During respiration, the exchange of gases takes place in ______.
पर्याय
bronchi
alveoli
bronchioles
trachea
MCQ
रिकाम्या जागा भरा
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उत्तर
During respiration, the exchange of gases takes place in alveoli.
Explanation:
Alveoli are tiny, pouch-like air sacs present at the end of bronchioles. Their walls are very thin and surrounded by a dense network of fine blood capillaries. This structure allows efficient diffusion of gases, so the exchange of oxygen and carbon dioxide takes place in the alveoli.
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