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CAIE A-Level Biology 9.1.4 Plan Diagrams of Trachea and Bronchus Walls

Practise drawing low-power airway plans with proportional tissue boundaries, distinguishing C-shaped tracheal from plate-like bronchial cartilage and positioning muscle and glands.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • draw tissue boundaries and relative proportions without showing individual cells
  • identify cartilage, smooth muscle, glands and epithelium from their positions
  • contrast tracheal cartilage rings with irregular bronchial cartilage plates

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