Physiology of Bronchial Tree

Question 1

Trachea

Answer 1

-made out of hyalin cartilage
- conducts air

Question 2

Bronchi

Answer 2

-made out of hyalin cartilage and smooth muscle
- conducts air; undergoes constriction and dialation

Question 3

Bronchioles

Answer 3

• No Cartilage!
• conducts air and secretions

Question 4

Alveoli

Answer 4

• tiny air sacs surrounded by capillary webs, attached to bronchioles
• reticular collagen fibers and elastic fibers
• main site for gas exchange