Histology of resp tract Flashcards
1
Q
What is respiratory epithelium?
A
- Pseudostratified
- Ciliated columnar (protection and secretion)
- Contains goblet cells (these are optically clear and secrete mucus)
2
Q
Describe the histology of the nose
A
- keratinising and non-keratinising squaous epithelium
- respiratory epithelium (pseudostratified columnar epithelial tissue, goblet cells)
- richly vasculated, seromucinous glands
3
Q
Describe the histology of the nasopharynx
A
- respiratory epithelium (pseudostratified columnar epithelial tissue, goblet cells)
- sinuses lower weight and adds resonance to voice
4
Q
Describe the histology of the larynx
A
- respiratory epithelium (pseudostratified columnar epithelial tissue, goblet cells)
- C cartilage holds open
- striated muscle
- seromucus
5
Q
Describe the histology of the trachea
A
- respiratory epithelium (pseudostratified columnar epithelial tissue, goblet cells)
- C cartilage
- lymph nose
- seromucinous glands
6
Q
Describe the histology of the vocal chords
A
- Straified squamous epithelium
- Reinke’s spaces (vibrations)
- few lymphatics
- folds contain elasticus
7
Q
What are bowmans glands?
A
- secrete, moisturize epithelium
- in olfactory receptor cells
8
Q
Type I pneumocytes
A
- higher SA
- flatter & flat nucleus
- few organelles
9
Q
Type II pneumocytes
A
- produce surfactant
- rounder, more
- mitochondria
10
Q
What are clara cells, where are they found
A
- Mostly in terminal branches
- no cilia
- mitochondria, SER, secretory granules
- no cartilage
11
Q
Where does the vagus nerve lie in relation to lung
A
Lies behind lung root
12
Q
Where does the pherenic nerve lie in relation to lung
A
In front of lung root
