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CAIE IGCSE Biology 9.2.1 Structures of the Mammalian Heart Questions

Practise identifying chambers, muscular walls, septum, one-way valves and coronary arteries in heart diagrams.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • Identify the left and right atria and ventricles in sectioned heart diagrams.
  • Locate one-way valves in heart sections and connect their position with preventing backflow.
  • Identify the septum between the heart’s sides and coronary arteries supplying heart muscle.

CAIE IGCSE Biology 9.2.1 Structures of the Mammalian Heart Questions question 1

[Maximum number: 6]

Fig. 2.1 shows a cross-section of a human heart.

Fig. 2.1

Fig. 2.1

Question (a)

(a)

On Fig. 2.1, label with an R the position of the right ventricle.

[ 1 ]

Question (b)

(b)

State the names of the structures labelled A and B on Fig. 2.1.

A
B

[ 2 ]

Question (c)

(c)

Fig. 2.2 shows a cross-section of part of a heart that has an incomplete structure.

Fig. 2.2

Fig. 2.2

Explain how the incomplete heart structure shown in Fig. 2.2 may affect a person's ability to transport oxygen.

[ 3 ]
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