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Why gas exchange surface like the alveoli in your lung are always moist in youtube?
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Why gas exchange surface like the alveoli in your lung are always moist?
In order for gas exchange to occur in the alveoli there must remain a constant supply of hemoglobin. Oxygen binds to hemoglobin and if these surfaces were dry then there wouldn't be any hemoglobin.
What keep the alveoli from collapsing?
Alveoli does not collapse because lungs always have a residual volume which prevents the alveoli to collapse.
Why is water always lost from the gas exchange surface?
Water is lost from the gas exchange surface of terrestrial organisms because gases must be exchanged with air. Terrestrial organisms have a high water potential, therefore when the gas exchange occurs water will be lost.
How are alveoli adapted to maximise diffusion?
The key is surface area. The indentations make the surface area of the lungs inner surface to be many times the surface area of a similarly sized sphere. The greater surface area means that the diffusion distance from the air cavity in the lung to the vascular part of the lung is very short.
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In the lungs is carbon dioxide more concentrated in the alveoli or in the blood?
In the lungs, carbon dioxide is concentrated more in the blood. The alveoli keeps the carbon dioxide at a lower level than in the blood.
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