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Exam-style practice

Heart answer explanations

Review worked answers and explanations for Heart. Aligned to Cambridge IGCSE Combined Science.

Answer explanations

Question 1 of 16

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Paper 3 structured question: Heart

Paper 3Theory (Core)2 marks

Description

Components of the Heart

The heart consists of four chambers: two atria and two ventricles, separated by a septum. It has one-way valves to prevent backflow and coronary arteries that supply blood to the heart muscle.

  1. a

    Identify List the four main components of the mammalian heart.

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