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Paper 3Theory (Core)2 marks
The circulatory system is essential for transporting blood throughout the body.
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Components of the Circulatory System
The circulatory system consists of the heart, blood vessels (arteries, veins, capillaries), and blood. The heart pumps blood, while valves ensure unidirectional flow.
- a[2]
Describe the role of the heart in the circulatory system.
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