what is difference between circulation in human beings and fish
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The oxygenated blood from the lungs enters the left ventricle via the left atrium and is then pumped out into the larger body circulation. ... The circulatory system of a fish therefore consists of a single - circuit circulation. Another difference from a physical standpoint is that fish have gills and humans have lungs.
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Explanation:
In mammals (like us) there is a double circulation. The right side of the heart receives blood returning back from the body; this blood is low in oxygen (blue in the figure to the right). ... In fish, the heart only has one atrium and one ventricle.
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