1 of 22© Boardworks Ltd 2011 The Circulatory System.
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Transcript of 1 of 22© Boardworks Ltd 2011 The Circulatory System.
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The Circulatory System
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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.
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.
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Single and double circulatory systems
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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.
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True or false?
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What is blood made up of?
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Which component?
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Blood vessels
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Which type of blood vessels?
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Gases moving in and out of the blood
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Blood and blood vessels
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Structures of the heart
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The cardiac cycle
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The stages of the cardiac cycle
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Glossary
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Anagrams
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Which structure?
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Multiple-choice quiz