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The Circulatory System. Human circulatory system. A circulatory system consists of a group of organs that assist the movement of substances, such as oxygen and glucose , around the body.
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Human circulatory system A circulatory system consists of a group of organs that assist the movement of substances, such asoxygen and glucose, around the body. Humans and other complex organisms have a closed circulatory system where blood is contained within a series of vessels. This allows the speed, pressure and distribution of blood to be controlled.
Double circulatory system advantages The double circulatory system produces higher pressures in blood vessels than a single circulatory system can. This creates a greater rate of blood flow to the tissues. The greater rate of flow allows blood to be pumped quickly even through the bodies of large mammals, like elephants and whales.
