Why is the counter-current exchange system important for fish gills?

Just wondering why it is important, very thankful for indepth anwsers, thankyou :)

3 Answers

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  • 1 decade ago
    Favourite answer

    It increases the amount of oxygen that diffuses into the blood. With countercurrent exchange, the amount of diffusion is greater than 50%.

  • Mary
    Lv 4
    5 years ago

    A! :) in the respiratory system of fish, as high O2 concentration water passes against the blood at a lower concentration the oxygen is passed from the water to the blood. therefore oxygen transfer, even if answer c is true..

  • 5 years ago

    important for a fast and easy exchange of gases

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