3.18 Arteries, veins and capillaries
Exam question
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Which blood vessels have valves?
(1)Total for this question: 1 mark
3(h) TRANSPORT · EXAM QUESTIONS
3.18 Arteries, veins and capillaries
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3.18 Arteries, veins and capillaries
Exam question
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Explain why arteries have thick, muscular and elastic walls.
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Total for this question: 2 marks
3.18 Arteries, veins and capillaries
Exam question
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Explain why veins have valves.
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Total for this question: 2 marks
3.18 Arteries, veins and capillaries
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Explain how capillaries are adapted for exchange of substances.
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Total for this question: 3 marks
3.18 Arteries, veins and capillaries
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Compare the structure of an artery and a vein.
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Total for this question: 3 marks
3.18 Arteries, veins and capillaries
Exam question
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Illustrative measurements.
Features of three blood vessels Vessel Wall thickness / mm Lumen diameter / mm X 1.0 4.0 Y 0.5 5.0 Z 0.001 0.008 Illustrative data, not from a real investigation. Identify vessels X, Y and Z.
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Total for this question: 3 marks
3.18 Arteries, veins and capillaries
Exam question
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Features of three blood vessels Vessel Wall thickness / mm Lumen diameter / mm X 1.0 4.0 Y 0.5 5.0 Z 0.001 0.008 Illustrative data, not from a real investigation. Calculate the ratio of wall thickness to lumen diameter for vessel X.
(2):1Total for this question: 2 marks
3.18 Arteries, veins and capillaries
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Explain why blood moves slowly through capillaries.
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Total for this question: 2 marks
3.18 Arteries, veins and capillaries
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Explain how muscles help blood return to the heart in the veins of the legs.
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Total for this question: 2 marks
3.18 Arteries, veins and capillaries
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Suggest why people who stand still for long periods may develop swollen ankles.
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Total for this question: 2 marks
3.18 Arteries, veins and capillaries
Exam question
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Which vessel carries blood at the highest pressure?
(1)Total for this question: 1 mark
3.18 Arteries, veins and capillaries
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Describe what happens to tissue fluid at the capillaries.
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Total for this question: 2 marks