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3 Cards in this Set
- Front
- Back
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diffusion |
movement from high concentration to low concentration |
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circulatory systems |
have circulatory fluid, a set of interconnecting vessels, and a muscular pump (heart). either opened or closed |
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open circulatory systems |
pump blood into a hemocoel with the blood diffusing back to thecirculatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood. |
