Beginner Alveoli Quiz

Ready to start the quiz?

This quiz contains 10 questions. Click below to begin.

Q1. What is the main function of alveoli in the lungs?

  • Producing sound
  • Gas exchange
  • Secreting mucus
  • Filtering dust

Q2. What type of blood vessel surrounds the alveoli?

  • Capillaries
  • Arteries
  • Veins
  • Lymphatics

Q3. What gas do alveoli take in from inhaled air?

  • Helium
  • Oxygen
  • Nitrogen
  • Carbon dioxide

Q4. What gas is removed from the blood into the alveoli?

  • Hydrogen
  • Carbon dioxide
  • Oxygen
  • Nitrogen

Q5. What is the shape of an alveolus?

  • Balloon-like sac
  • Pyramid
  • Flat plate
  • Tube

Q6. Which cell type lines the alveoli and facilitates gas exchange?

  • Goblet cells
  • Type II pneumocytes
  • Type I pneumocytes
  • Ciliated epithelial cells

Q7. What substance reduces surface tension in alveoli?

  • Bile
  • Surfactant
  • Water
  • Mucus

Q8. Which cell in alveoli produces surfactant?

  • Type II pneumocytes
  • Alveolar macrophages
  • Type I pneumocytes
  • Basal cells

Q9. Why are alveoli so numerous in the lungs?

  • To filter bacteria
  • To produce sound
  • To increase surface area for gas exchange
  • To cool air

Q10. What keeps alveoli from collapsing during exhalation?

  • Muscle contractions
  • Blood pressure
  • Nerve signals
  • Surfactant and residual air
Disclaimer: The content on this site is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.