two examples of phyla with open circulatory system
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Two of the largest phyla in the world, Arthropoda and Mollusca, have an open circulatory system. Arthropods, members of the phylum Arthropoda, include most insectsand sea organisms like crabs and lobsters.
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open circulatory system describes a system where blood and interstitial fluid are allowed to mix in an organism. Interstitial fluid is just the fluid found between cells in the body.
So, what does this mean? Organisms that utilize an open circulatory system don't have 'true' blood since it is mixed with other fluids. The 'blood' in these organisms is defined ashemolymph, or the mixture between blood and interstitial fluid. You can remember that because 'heme' is Latin for 'blood,' and 'lymph' refers to liquid.
Humans have a closed circulatory system, which means that our blood and other fluids never mix. So, if humans don't have an open circulatory system, why should we care about it? Understanding how different organisms work can help us better understand why our bodies work the way they do!
So, what does this mean? Organisms that utilize an open circulatory system don't have 'true' blood since it is mixed with other fluids. The 'blood' in these organisms is defined ashemolymph, or the mixture between blood and interstitial fluid. You can remember that because 'heme' is Latin for 'blood,' and 'lymph' refers to liquid.
Humans have a closed circulatory system, which means that our blood and other fluids never mix. So, if humans don't have an open circulatory system, why should we care about it? Understanding how different organisms work can help us better understand why our bodies work the way they do!
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