Paper 3 structured question: Circulatory systems
Paper 3Theory (Core)2 marks
Description
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.
