Respiratory - Histology

Question 1

What is meant by respiratory epithelium?

Answer 1

Pseduo-stratified, ciliated, coloumnar epithelium with goblet cells.

Question 2

Where in the respiratory tract is respiratory epithelium found?

Answer 2

• Nasal cavity
• Sinuses
• Nasopharynx
• Trachea
• False vocal cords and larynx
• All bronchi (main, lobar, segmental)
• Conducting bronchioles

Question 3

What epithelium lines the true vocal cords?

Answer 3

• Stratified squamous

Question 4

What epithelium lines the oropharynx and laryngopharynx?

Answer 4

• Stratified squamous

Question 5

What epithelium lines the conducting and respiratory bronchioles?

Answer 5

• Ciliated/non-ciliated cuboidal cells

Question 6

Where are clara cells found?

Answer 6

Terminal bronchioles

Question 7

What cells are found in the nose associated with olfaction?

Answer 7

• Bi polar neurons

- Serous glands of Bowman

Question 8

What is the shape of a type 1 pneumocyte?

Answer 8

• Flat cell and nucleus, few organelles

Question 9

What is the shape of a type 2 pneumocyte?

Answer 9

• Round cell and nucleus, rich in organelles

Question 10

What makes up the blood-air barrier (from inside the alveolus to outside)?

Answer 10

1 - Type 1 pneumocytes
2 - Fused basement membrane
3 - Capillary endothelial cells

Question 11

How is phonation achieved?

Answer 11

Arytenoid cartilage rotates and moves on top of the cricoid cartilage to change the shape and tension of vocal cords. This uses intrinsic muscles.