Form and Function B.6 Gas Exchange (id: c5165083b)

本题目来源于试卷: Form and Function B.6 Gas Exchange，类别为 IB生物学

[问答题]
1.Describe one characteristiqay* hx0o-nf0c of the b; pg*a*+.uiugovybt f 5awn(3m. :pgjronchioles.

2.Distinguish between the external intercostal muscles and the internal intercostal muscles.

3.Outline how the concentration gradients of oxygen and carbon dioxide are maintained in the lungs.

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