3.15 Structure and function of the heart
Exam question
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Which chamber of the heart pumps blood to the lungs?
(1)Total for this question: 1 mark
3(h) TRANSPORT · EXAM QUESTIONS
3.15 Structure and function of the heart
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3.15 Structure and function of the heart
Exam question
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Which blood vessel brings oxygenated blood from the lungs to the heart?
(1)Total for this question: 1 mark
3.15 Structure and function of the heart
Exam question
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Describe the route of blood through the heart from the vena cava to the aorta.
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Total for this question: 4 marks
3.15 Structure and function of the heart
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Explain why the wall of the left ventricle is thicker than the wall of the right ventricle.
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Total for this question: 2 marks
3.15 Structure and function of the heart
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Explain the function of the valves in the heart.
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Total for this question: 2 marks
3.15 Structure and function of the heart
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Explain why the walls of the atria are thinner than the walls of the ventricles.
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Total for this question: 2 marks
3.15 Structure and function of the heart
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State the function of the septum.
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Total for this question: 1 mark
3.15 Structure and function of the heart
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Illustrative context: a "hole in the heart".
Some babies are born with a hole in the septum. Explain why they may have a bluish skin colour.
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Total for this question: 2 marks
3.15 Structure and function of the heart
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Which vessel supplies the heart muscle with oxygen?
(1)Total for this question: 1 mark
3.15 Structure and function of the heart
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Explain why the heart muscle needs its own blood supply.
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Total for this question: 2 marks
3.15 Structure and function of the heart
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Describe what happens to the valves when the ventricles contract.
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Total for this question: 2 marks
3.15 Structure and function of the heart
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Explain why the human heart is described as a double pump.
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Total for this question: 2 marks
3.15 Structure and function of the heart
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A heart valve becomes leaky. Suggest the effect on the circulation.
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Total for this question: 2 marks
3.15 Structure and function of the heart
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Maximum blood pressure in heart chambers Chamber Pressure / kPa left atrium 1.6 left ventricle 16.0 right atrium 0.8 right ventricle 3.2 Illustrative data, not from a real investigation. Calculate how many times greater the pressure is in the left ventricle than in the right ventricle.
(2)timesTotal for this question: 2 marks
3.15 Structure and function of the heart
Exam question
Mark points shown after marking
Maximum blood pressure in heart chambers Chamber Pressure / kPa left atrium 1.6 left ventricle 16.0 right atrium 0.8 right ventricle 3.2 Illustrative data, not from a real investigation. Explain why the right ventricle produces a lower pressure than the left ventricle.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks