CAIE IGCSE Biology 11.1.7 Cartilage in the Trachea
Practise explaining how cartilage rings support the trachea and bronchi so airways remain open during breathing.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- state that cartilage supports the trachea and bronchi
- explain that the rings keep the airway open and prevent collapse as pressure changes
- distinguish this support role from cilia moving mucus or intercostal muscles moving ribs
11.1.7—Function of cartilage in the trachea question 1
Fig. 1.1 is a diagram of the gas exchange system in humans.
Fig. 1.1
State the name of the tissue that forms C-shaped structures in the wall of the trachea and state its function.
name
function
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