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In which part of the human respiratory system does actual oxygen exchange take place? 1.Bronchi 2.Trachea 3.Diaphragm 4.Alveoli
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3 votes
In which part of the human respiratory system does actual oxygen exchange take place?

1.Bronchi

2.Trachea

3.Diaphragm

4.Alveoli

User Xbd
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2 Answers

5 votes
The alveoli. These little air sacs are found on the end of the bronchioles and are the place where oxygen enters the blood and the carbon dioxide leaves.


User Quick Learner
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7 votes

Answer:

D. Alveoli

Step-by-step explanation:

I had the K12 test

User Shy Agam
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7.7k points
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