A circulation system in which blood flows within a network of vessels. Closed circulatory system. In a closed circulatory system, blood moves through a series of tubes called vessels, delivering nutrients and oxygen efficiently throughout the body.
Closed Circulatory System: A circulation system in which blood flows within a network of vessels. Closed circulatory system. In a closed circulatory system, blood moves through a series of tubes called vessels, delivering nutrients and oxygen efficiently throughout the body.
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