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Learning objective

Explain how the heart operates through the contraction of atrial and ventricular muscles and the functioning of the valves.

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Cambridge IGCSE Combined ScienceTransport in animalsSupplement content

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Quick explanation

Explain how the heart operates through the contraction of atrial and ventricular muscles and the functioning of the valves

  • This point belongs to Heart, especially Heart outcomes.
  • You need to be able to explain how the heart operates through the contraction of atrial and ventricular muscles and the functioning of the valves.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Describe

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Paper 4 structured question: Heart

Paper 4Theory (Extended)3 marks

Description

Heart Function

The heart consists of four chambers and valves that regulate blood flow. The atria contract first, followed by the ventricles, ensuring efficient circulation.

  1. a

    Explain how the contraction of the atrial and ventricular muscles contributes to the heart's function.

    Aim for approximately 3 distinct marking points.

    [3]
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Cambridge IGCSECombined Science resources