Module 7: Respiratory System: Conducting System

Question 1

2 portions of respiratory system

Answer 1

conducting system (supplies/cleans air)
Respiratory portion (provides interface for exchange of gases between atmosphere and blood)

Question 2

Conducting portion

Answer 2

Nasal cavities, sinuses and nasopharynx, larynx, trachea, bronchi, bronchioles

Cleans, warms and moistens air

Question 3

Bronchi

Answer 3

greater than 1mm
Lined with respiratory epi with goblet cells
Lamina propria has lots of elastin
Discontinuous layer of smooth muscle
Submucosa has mumcoserous glands
Cartilage is in plates/islands of hyaline cartilage
Adventitia connective tissue

Question 4

Bronchioles

Answer 4

less than 1 mm
little to no cartilage support
Simple columnar and ciliated epi with very few goblet cells
Smooth layer is most prominent; continuous

Question 5

MALT (mucosa-associated lymphoid tissue)

Answer 5

small lymph aggregates may be found in adventitia