Histology Flashcards
1
Q
What is the general histology of the upper airways?
A
- Ciliated pseudostratified columnar epithelium
- Bronchus associated lymphoid tissue
- Supported by cartilage and smooth muscle
2
Q
What is the blood supply to the upper airways?
A
Dual blood supply: pulmonary and bronchial arteries
3
Q
What are the roles of each cell type in the upper airways?
A
- Ciliated cells - mucociliary escalator
- Goblet cells - mucus production
- Basal cells - pluripotent reserve cell
- Neuroendocrine cells - chemoreceptors
4
Q
What is the main component of the bronchiole?
A
Muscle for dilation and constriction
5
Q
What are the two types of cells in the alveoli?
A
- Type I pneumocyte (90%) - thin and flat
2. Type II pneumocyte (5%) - surfactant
