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10 questions from this quiz
Trachea → bronchi → bronchioles → alveoli
Two bronchi, one for each lung
50−75 m250-75 \text{ m}^250−75 m2
One cell thick
Capillaries
From alveolar air into the blood
From blood into alveolar air
16%
0.04%
So gases don't have far to travel
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