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Cambridge IGCSE Biology practice

Which blood vessel has the thickest walls?

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MCQ

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cambridge_mcq

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Topic

Blood vessels

Exam-style question

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Which blood vessel has the thickest walls?.

  1. A.Artery
  2. B.Vein
  3. C.Capillary
  4. D.All have the same thickness

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Paper 3 structured question: Blood vessels

Paper 3Theory (Core)2 marks

Diagram Description

Diagram of blood vessels

A diagram shows three types of blood vessels: artery, vein, and capillary. The artery has a thick wall and narrow lumen, the vein has a thinner wall and wider lumen with valves, and the capillary has a very thin wall and very narrow lumen.

CharacteristicArteryVeinCapillary
Wall thicknessThickThinOne cell thick
Lumen sizeNarrowWideVery narrow
Valves presentNoYesNo
  1. a

    Describe the differences in wall thickness between arteries, veins, and capillaries.

    Aim for approximately 2 distinct marking points.

    [2]