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Learning objective

Explain the circulatory system as a network of blood vessels that includes a pump and valves to maintain unidirectional blood flow.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE BiologyTransport in animalsCore content

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Quick explanation

Explain the circulatory system as a network of blood vessels that includes a pump and valves to maintain unidirectional blood flow

  • This point belongs to Circulatory systems, especially Circulatory systems outcomes.
  • You need to be able to explain the circulatory system as a network of blood vessels that includes a pump and valves to maintain unidirectional blood flow.
  • 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

Why it matters

This objective helps connect Circulatory systems outcomes to exam-style questions, flashcards, and revision notes for Circulatory systems.

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Paper 3 structured question: Circulatory systems

Paper 3Theory (Core)2 marks

Diagram Description

Simplified diagram of the circulatory system

The diagram shows the heart connected to arteries and veins. Valves are present in some veins.

  1. a

    Describe the role of valves in the circulatory system.

    Aim for approximately 2 distinct marking points.

    [2]
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