Histology Of Respiratory Tract

Question 1

For the extrapulmonary tubes of the respiratory tract, what is the structure order - from lumen to outside of the tube?

Answer 1

Mucosa, submucosa, cartillage, adventitia.

Question 2

The mucosa of the extrapulmonary tubes of the respiratory tract consists of 2 layers. What are these 2 layers?

Answer 2

The epithelium and a thin loose connective tissue called the lamina propria.

Question 3

What connective tissue fibre pre dominates the respiratory tract?

Answer 3

Elastin

Question 4

Name 2 cell types found in the epithelial layer

Answer 4

Basal cells, goblet cells

Question 5

What is the type of epithelium in the respiratory tract?

Answer 5

Pseudostratified cilliated columnar epithelium

Question 6

What does the submucosa layer contain and what is their function?

Answer 6

Glands that secrete mucous

Question 7

What can be viewed to distinguish a histology slide of the trachea to a bronchus?

Answer 7

The cartillage are shaped in C rings in the trachea whereas they form cartillage plates in the bronchus

Question 8

The absence of what 3 main features distinguishes a bronchus from a bronchiole?

Answer 8

No goblet cells, cartilage and glands

Question 9

What type of epithelium is found in bronchioles?

Answer 9

Columnar or cuboidal

Question 10

What type of connective tissue fibres pre dominate the respiratory portion of the lung tissue?

Answer 10

Reticular and elastin fibers