Respiratory Histology MCQs Questions And Answers

1. Which cell is a respiratory macrophage?
a. Kupffer cells
b. Histiocyte
c. Dust cell
d. Langerhans cell
e. Microglia
Answer: c

2. Which cell is a also called a septal cell?
a. Clara cell
b. Type I pneumocyte
c. Type II pneumocyte
d. Dust cell
e. Brush cell
Answer: c

3. What type of tissue makes up the rings of the trachea?
a. Compact bone
b. Spongy bone
c. Hyaline cartilage
d. Fibrocartilage
e. Elastic cartilage
Answer: c

4. What type of cells are found in the olfactory mucosa?
a. Basal cells
b. Brush cells
c. Olfactory cells
d. Sustentacular cells
e. All of the above
Answer: e

5. What type of epithelium is found in the respiratory mucosa of man?
a. Non-ciliated pseudostratified columnar epithelium with goblet cells
b. Ciliated pseudostratified columnar epithelium with goblet cells
c. Simple columnar epithelium
d. Stratified squamous epithelium
e. Transitional epithelium
Answer: b

6. Which cell secretes surfactant?
a. Clara cell
b. Type I pneumocyte
c. Type II pneumocyte
d. Dust cell
e. Brush cell
Answer: c

7. Which cartilage of the larynx is made of elastic cartilage?
a. Thyroid cartilage
b. Cricoid cartilage
c. Arytenoid cartilage
d. Epiglottis
e. Corniculate cartilage
Answer: d

8. Which cell is rarely found in the alveolus?
a. Clara cell
b. Type I pneumocyte
c. Type II pneumocyte
d. Dust cell
e. Brush cell
Answer: e

9. What is the first portion of the respiratory tree where gas exchange can occur?
a. Alveolar duct
b. Alveoli
c. Alveolar sac
d. Respiratory bronchiole
e. Terminal bronchiole
Answer: d

10. What structure is similar to a “bunch of grapes?
a. Alveolar duct
b. Alveoli
c. Alveolar sac
d. Respiratory bronchiole
e. Terminal bronchiole
Answer: c

11. Which cell is found in large numbers in the terminal bronchioles?
a. Clara cell
b. Type I pneumocyte
c. Type II pneumocyte
d. Dust cell
e. Brush cell
Answer: a

12. What type of tissue makes up the rings of the trachea?
a. Compact bone
b. Spongy bone
c. Hyaline cartilage
d. Fibrocartilage
e. Elastic cartilage
Answer: c

13. What type of tissue makes up the epiglottis?
a. Compact bone
b. Spongy bone
c. Hyaline cartilage
d. Fibrocartilage
e. Elastic cartilage
Answer: e

14. What is the smallest airspace of the respiratory tree?
a. Alveolar duct
b. Alveoli
c. Alveolar sac
d. Respiratory bronchiole
e. Terminal bronchiole
Answer: b

15. Which cell is a type of neuron?
a. Basal cells
b. Brush cells
c. Olfactory cells
d. Sustentacular cells
e. All of the above
Answer: c

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