Edexcel IGCSE Biology 2.68 artery, vein and capillary structure

Practise comparing artery, vein and capillary wall structures, linking lumen size, muscle and elastic tissue to blood pressure and flow.

Exam points

compare artery and vein walls using elastic tissue, muscle thickness and lumen size
explain how elastic fibres and thick walls help arteries withstand high blood pressure

[Maximum number: 2]

The diagram shows the human blood circulation system.

(b) Give two differences in the structure of the blood vessel labelled V and the structure of the blood vessel labelled Y.

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