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1)...The type of circulatory system that occurs in fishes, in which the blood passes only once through the heart in each complete circuit of the body Compare double circulation. From: single circulation
2)...In incomplete double circulation, blood comes to the heart by two different routes but goes out through a single route, and amphibian heart is three chambered left atrium and right atrium and single ventricle.
3)...The human circulatory system is a double circulatory system. It has two separate circuits and blood passes through the heart twice: the systemic circuit is between the heart and the other organs. ...
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