OBJECTIVE LIFE SCIENCE
ANIMAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Water flow through the gills should be ____ to maximize oxygen exchange
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fast
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slow
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constantly changinging
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None of the above
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Explanation:
Detailed explanation-1: -Fish gills use a design called ‘countercurrent oxygen exchange’ to maximize the amount of oxygen that their blood can pick up. They achieve this by maximizing the amount of time their blood is exposed to water that has a higher oxygen level, even as the blood takes on more oxygen.
Detailed explanation-2: -Because of the constant flow of gas across the gas-exchange membrane and the constant partial pressure differences, gills are the most efficient respiratory system in exchanging gases.
There is 1 question to complete.