1. Swati Kumari
  2. Science 10
  3. Thursday, June 16 2016, 06:40 PM
Why blood goes only once through the heart in a fish ?
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Fishes have only two chambers to their hearts, and the blood is pumped to the gills, is oxygenated there, and passes directly to the rest of the body. Thus, blood goes only once through the heart in the fish during one cycle of passage through the body.
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  2. Science 10
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