redheadheather71 redheadheather71
  • 02-06-2020
  • Biology
contestada

What is the trend through vertebrates from fish to mammals in terms of their circulatory function?

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Aquarius12
Aquarius12 Aquarius12
  • 02-06-2020

Answer:

Fish pump blood from the heart to their gills, where gas exchange occurs, and then on to the rest of the body. Mammals pump blood to the lungs for gas exchange, then back to the heart for pumping out to the systemic circulation. Blood flows in only one direction.

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