Gas exchange in fish 6.3

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what are the gills made up of
gill filaments
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what are the gills called at right angle to gill filaments
gill lamellae
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what do these gills help to do
increase the surface area of the gills
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how does the water and blood flow in the fish
countercurrent flow
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what is the countercurrent exchange principle
Blood that is already well loaded with oxygen meets water which has oxygen there is diffusion of oxygen from water to blood when there is little in the blood and most oxygen gone from water diffusion from water to blood takes place
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what would happen if the diffusion gradient was 50-50
it would mean only 50% of the blood would be absorbed
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what are the gills called at right angle to gill filaments

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gill lamellae

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what do these gills help to do

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Card 4

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how does the water and blood flow in the fish

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what is the countercurrent exchange principle

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