Histology Flashcards
What kind of cells are found in respiratory epithelium?
Pseudo-stratified, ciliated, columnar epithelium that contain goblet cells
What does the base of the nasal cavity contain?
Olfactory epithelium
What is found underneath the respiratory epithelium of the nasal cavity?
Lamina propria- thin band of connective tissue
Lamina propria + epithelium= mucosa
What kind of cells line the oropharynx and epiglottis?
Non keratinised stratified squamous epithelium
The walls of the larynx are covered in respiratory epithelium except the vocal chords which are covered in _
Stratified squamous epithelium
The trachea is covered by rings of _
Cartilage
What are the different layers of cells found in the trachea? (from tracheal lumen to outwards)
- Respiratory epithelium
- Basal lamina
- Lamina propria
- Submucosa- includes sero-mucous glands
Trachea divide into bronchi, where hyaline cartilage is replaced by irregular cartilage plates. Once the bronchi divide into bronchioles, they still contain cartilage. (T/F?)
False, they lack cartilage
Bronchioles are covered by a layer of lamina propria comprising of _ _
Smooth muscle.
Smooth muscle of bronchioles is innervated by the parasympathetic system, histamine and other factors. Constricts during asthma attack
Terminal bronchioles are lined with non ciliated _ cells
Clara
Important in- stem cells, detox, immune modulation, surfactant production
The alveoli are lined by an epithelium that consists of two cell types
Type I and II alveolar cells
Alveolar cells are also called what?
Pneumocytes
Type I alveolar cells are covered by
Simple squamous epithelium
Type II alveolar cells contain _ bodies that produce _
Lamellar, Surfactant
The minimal thickness of the Type I alveolar cells allows what?
gas exchange
