Cambridge AS & A Level Biology
9.1The gas exchange system
The gas exchange system in Cambridge AS & A Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 9.1.1Describe the structure of the human gas exchange system (lungs, trachea, bronchi, bronchioles, alveoli, capillary network).
- 9.1.2Describe the distribution of cartilage, ciliated epithelium, goblet cells, alveolar squamous epithelium, smooth muscle and capillaries.
- 9.1.3Recognise those tissues in slides and micrographs.
- 9.1.4Recognise the trachea, bronchi, bronchioles and alveoli and draw plan diagrams of the trachea and bronchus wall.
- 9.1.5Describe how ciliated epithelial cells, goblet cells and mucous glands keep the system healthy.
- 9.1.6Describe the functions of cartilage, smooth muscle, elastic fibres and squamous epithelium.
- 9.1.7Describe gas exchange between alveolar air and capillary blood.
Lessons
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The human gas exchange system
40 min
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