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Exam-style practice

Heart practice questions

Practise mixed syllabus-aligned questions for Heart. Aligned to Cambridge IGCSE Biology.

Practice questions

Question 20 of 22

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Paper 4 structured question: Heart

Paper 4Theory (Extended)3 marks

Description

Heart Pumping Action

The heart has atrial and ventricular muscles that contract in sequence. Valves between chambers and at exits prevent backflow.

  1. a

    Identify which muscles contract first during the heart cycle.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Describe how the valves help blood flow through the heart.

    Aim for approximately 2 distinct marking points.

    [2]
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