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The alveolus is a air sac that holds the oxygen. It squashes the oxygen molecules so they diffuse from the alveolus into the capillary. From there, they attach themselves to deoxygenated Red Blood Cells. The oxygen in the blood plasma are also squashed and are diffused. They go from the capillary to the alveoli to get breathed out. The alveoli transfers the oxygen to the lung capillaries and oxygenates the blood, then it is breathed out as Carbon Dioxide.
Wiki User
∙ 11y ago
Wiki User
∙ 10y agoType your answer here... small air sac in the lungs, where oxygen and cardon dioxide are exchanged with the blood.
the exchange of gases with the blood.
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What layer of the atmosphere is the air very thin and has little moisture?
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How does a layer of snow stop young plants dying in frost?
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Because of instability and moisture.
