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?
- Producing sound
- Secreting mucus
- Filtering dust
- Gas exchange
Q2. What type of blood vessel surrounds the alveoli?
- Capillaries
- Arteries
- Veins
- Lymphatics
Q3. What gas do alveoli take in from inhaled air?
- Oxygen
- Helium
- Nitrogen
- Carbon dioxide
Q4. What gas is removed from the blood into the alveoli?
- Nitrogen
- Hydrogen
- Carbon dioxide
- Oxygen
Q5. What is the shape of an alveolus?
- Tube
- Flat plate
- Balloon-like sac
- Pyramid
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
- Mucus
- Surfactant
- Water
Q8. Which cell in alveoli produces surfactant?
- Alveolar macrophages
- Type II pneumocytes
- Basal cells
- Type I pneumocytes
Q9. Why are alveoli so numerous in the lungs?
- To cool air
- To produce sound
- To filter bacteria
- To increase surface area for gas exchange
Q10. What keeps alveoli from collapsing during exhalation?
- Nerve signals
- Muscle contractions
- Surfactant and residual air
- Blood pressure