Beginner Alveoli Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. What is the main function of alveoli in the lungs?
- Secreting mucus
- Filtering dust
- Producing sound
- Gas exchange
Q2. What type of blood vessel surrounds the alveoli?
- Arteries
- Veins
- Capillaries
- Lymphatics
Q3. What gas do alveoli take in from inhaled air?
- Carbon dioxide
- Oxygen
- Helium
- Nitrogen
Q4. What gas is removed from the blood into the alveoli?
- Carbon dioxide
- Hydrogen
- Oxygen
- Nitrogen
Q5. What is the shape of an alveolus?
- Flat plate
- Tube
- Pyramid
- Balloon-like sac
Q6. Which cell type lines the alveoli and facilitates gas exchange?
- Type I pneumocytes
- Ciliated epithelial cells
- Type II pneumocytes
- Goblet cells
Q7. What substance reduces surface tension in alveoli?
- Mucus
- Water
- Bile
- Surfactant
Q8. Which cell in alveoli produces surfactant?
- Type II pneumocytes
- Type I pneumocytes
- Alveolar macrophages
- Basal cells
Q9. Why are alveoli so numerous in the lungs?
- To cool air
- To increase surface area for gas exchange
- To produce sound
- To filter bacteria
Q10. What keeps alveoli from collapsing during exhalation?
- Blood pressure
- Muscle contractions
- Surfactant and residual air
- Nerve signals