CAIE IGCSE Biology 9.1.1 Components of a Circulatory System
Practise describing a circulatory system as a pump, a network of vessels and valves that maintain one-way blood flow.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- identify the heart as a muscular pump that drives blood into vessels
- state that arteries carry blood away and veins return blood to the atria
- explain that valves prevent backflow and ensure one-way movement through the system
9.1.1—Circulatory system as a system question 1
[Maximum number: 1]
Which statements describe how the structures in the circulatory system function?
1 a muscular pump to push blood into vessels
2 valves to ensure one-way blood flow
3 veins to take blood away from the heart
4 vessels to return blood to the heart
A
1, 2 and 3
B
1, 2 and 4
C
1, 3 and 4
D
2, 3 and 4
B
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