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CAIE IGCSE Biology 9.3 Blood Vessels Questions

Practise blood-vessel questions on artery, vein and capillary structure, pressure adaptations, diffusion exchange and named vessel routes.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • identify arteries, veins and capillaries from wall thickness, lumen size and valves
  • link artery, vein or capillary structure to blood pressure, flow or diffusion distance
  • name pulmonary, renal and coronary vessels and state oxygenation where diagrams require it

Covered syllabus points

9.3.1—Structure of arteries, veins9.3.2—Functions of capillaries9.3.3—Main blood vessels9.3.4—Structure of arteries and veins is9.3.5—Structure of capillaries is related9.3.6—Main blood vessels

Question 1

[Maximum number: 1]

What is a feature of veins?

A

one-cell-thick wall

B

narrow lumen

C

thick muscular walls

D

valves are present

Question 2

[Maximum number: 4]

Question (a)

(a)

Fig. 3.1 is a diagram of alveoli and associated blood vessels.

Fig. 3.1

Fig. 3.1

[ 4 ]

Question (i)

(i)

Explain how the structure of a capillary is related to its function.

[ 3 ]

Question (ii)

(ii)

State the name of the blood vessel that transports blood from the heart towards the capillaries in the lungs.

[ 1 ]
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