Bronchial Tree: Division of Bronchi into Bronchioles

Question 1

Primary main bronchi

Answer 1

-2 of them (1 in each lung)
-extrapulmonary
-conducting zone
-surrounded by hyaline cartilage
-has mucus glands

Question 2

secondary (lobar) bronchi

Answer 2

-5 of them (1 to each lobe)
-intrapulmonary
-conducting zone
-surrounded by hyaline cartilage
-has mucus glands

Question 3

tertiary (segmental) bronchi

Answer 3

-several of them (1 to each bronchopulmonary segment)
-intrapulmonary
-conducting zone
-surrounded by hyaline cartilage (start to see presence of smooth muscle)
- does have mucus glands

Question 4

4th order bronchi, 5th order bronchi, etc.

Answer 4

-intrapulmonary
-conducting zone
-surrounded by smooth muscle
-has no mucus glands

Question 5

large bronchioles

Answer 5

-has 1 to each lobule
-intrapulmonary
-conducting zone
-surrounded by smooth muscle
-has no mucus glands

Question 6

small bronchioles

Answer 6

-intrapulmonary
-conducting zone
-surrounded by smooth muscle
-has no mucus glands

Question 7

terminal bronchioles

Answer 7

-intrapulmonary
-conducting zone
-surrounded by smooth muscle
-has no mucus glands

Question 8

respiratory bronchioles

Answer 8

-intrapulmonary
-respiratory zone
-surrounded by smooth muscle
-has no mucus glands

Question 9

alveolar ducts

Answer 9

-intrapulmonary
-respiratory zone
-surrounded by alveoli which is composed of simple squamous epithelial
-has no mucus glands