Histology

Question 1

Nasal Cavity

Answer 1

Lined by respiratory epithelium (psuedostratified ciliated columnar), underneath is lamina propria and connective tissue (containing seromucous glands)

Question 2

Ooropharynx

Answer 2

Transmits both air and food so lined by non keratinised squamous epithelium

Question 3

Larynx

Answer 3

Walls made of cartilage and muscle, except for vocal cords which are lined with stratified squamous epithelium

Question 4

Trachea

Answer 4

Respiratory epithelium
Basal lamina
Lamina propria
Submucosa (includes seromucous glands)
Cartilaginous rings

Question 5

Bronchi

Answer 5

Respiratory epithelium
Lamina propria (smooth muscle and seromucous glands)
Irregular shaped cartilage

Question 6

Bronchioles

Answer 6

No cartilage
Cuboidal epithelium
Lamina propria (smooth muscle)

Question 7

Terminal bronchioles

Answer 7

Contain Clara cells

Question 8

Clara cells

Answer 8

Detoxify
Immune modulation
Surfactant production

Question 9

Respiratory Bronchiole

Answer 9

Alveoli interrupt wall of airway

Question 10

Type 1 alveolar cells

Answer 10

Simple squamous epithelium
90% alveolar surface
Blood air barrier

Question 11

Type 2 alveolar cells

Answer 11

Polygonal shape with mircrovilli

Contains surfactant

Question 12

Alveolar macrophages

Answer 12

Phagocytose inhaled particles

Migrate up bronchiole tree to be swallowed