CAIE IGCSE Biology 11.1.2 Parts of the Human Breathing System
Practise identifying airways, lungs, breathing muscles, alveoli and associated capillaries in diagrams and images.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- trace the airway from larynx and trachea through bronchi and bronchioles to alveoli
- identify ribs, intercostal muscles and diaphragm in breathing-system diagrams
- link alveoli with their surrounding capillary network in gas-exchange images
11.1.2—Following parts of the breathing question 1
[Maximum number: 1]
Substances move between blood and tissues at various sites in the circulatory system of mammals.
Oxygen is absorbed into the blood as it passes through the lungs.
State the structures in the lungs where oxygen passes into the blood from the air.
alveoli / alveolus ;
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