8 exchange and transport in animals
闪卡自测
Which process takes place at the alveoli?
所有闪卡
闪卡 1
问题
Which process takes place at the alveoli?
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答案
The process that takes place in the alveoli is gas exchange.
闪卡 2
问题
True or False? Alveoli and surrounding capillaries are surrounded by multiple layers of cells to minimise diffusion distance.
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答案
False. Alveoli and surrounding capillaries are surrounded by single layers of cells to minimise diffusion distance.
闪卡 3
问题
True or False? ** A layer of moisture on the surface of the alveoli **aids diffusion.
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答案
True. Gases dissolve in the layer of moisture on the surface of the alveoli, aiding diffusion.
闪卡 4
问题
What are the features of alveoli that make them an efficient exchange surface?
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答案
Alveoli are an efficient gas exchange surface because:
闪卡 5
问题
How is a steep concentration gradient for both oxygen and carbon dioxide maintained in the alveoli?
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答案
A steep concentration gradient for both oxygen and carbon dioxide is maintained in the alveoli as follows: