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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Heart

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Heart

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Paper 3Theory (Core)3 marks

Understanding the structure of the heart is essential for studying its function.

Description

Heart Structure

The heart has a muscular wall, a septum, atria, ventricles, one-way valves, and coronary arteries.

  1. a

    Describe Explain the function of the one-way valves in the heart.

    Aim for approximately 3 distinct marking points.

    [3]

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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.

    Aim for approximately 2 distinct marking points.

    [2]