Other questions in this quiz

2. What is the role of cilia in the trachea?

  • Help the trachea contract
  • Waft mucus up the airway to the back of the throat
  • Secrete mucus to trap particles

3. What are the walls of the trachea made up of?

  • Ciliates epithelium
  • Goblet cells
  • Smooth muscle
  • Cartilage
  • Elastic fibres

4. What type of epithelium is found in the walls of the alveolus?

  • Squamous
  • Ciliated

5. How does the capillary wall reduce diffusion distance?

  • One cell thick
  • Few cells thick
  • Flattened or thin cells

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