Histology

Question 1

Answer 1

Trachea

Question 2

Answer 2

Trachea

Question 3

Answer 3

Primary bronchus

Question 4

Answer 4

Tertiary bronchus
* These have Irregular cartilage plates and are lined by respiratory epithelium. Spiraling smooth muscle bundles separate the lamina propria from the submucosa, which contains seromucous glands

Question 5

Answer 5

Bronchiole:
Terminal bronchioles, the most distal part of the conducting portion of the respiratory system, are lined by a simple cuboidal epithelium that still contains some ciliated cells but no Goblet cells. Note that they have neither glands nor cartilage, but they do contain smooth muscle.

Question 6

_ mark the transition from the conducting portion to the respiratory portion of
the respiratory system. They are lined by simple cuboidal epithelium and some ciliated cells, except
where their walls are interrupted by alveoli, the sites where gas exchange occurs and where the lining
abruptly changes to a simple epithelium composed of highly attenuated squamous cells

Answer 6

Respiratory bronchioles mark the transition from the conducting portion to the respiratory portion of
the respiratory system. They are lined by simple cuboidal epithelium and some ciliated cells, except
where their walls are interrupted by alveoli, the sites where gas exchange occurs and where the lining
abruptly changes to a simple epithelium composed of highly attenuated squamous cells

Question 7

Answer 7

Lamellar bodies