IB Biology SL 3.2.2 Arteries and Veins Question Bank
Practise IB Biology SL 3.2.2 by identifying arteries and veins and linking wall thickness, lumen size, valves and pressure to function.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Distinguish arteries and veins using wall thickness, lumen size, valves and visible micrograph features.
- Explain how vessel structure supports high arterial pressure and low-pressure venous return.
B3.2.2—Artery and vein structure question 1
The diagram shows a cross section through an artery and a vein.
Identify which of the two labelled blood vessels is the artery, giving a reason for your answer.
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