1.4 Basic Histology of the Gut Tube Flashcards
1
Q
What does the entire GI tract share?
A
Common histological features, from oesophagus to anus
2
Q
What are the 4 distinct functional features of the GI tract?
A
- Mucosa (mucous membrane)
- Submucosa
- Muscularis propria
- Serosa (or adventitia)
3
Q
What are the 3 layers of the mucosal layer?
A
- epithelium
- lamina propria
- muscularis mucosae
4
Q
What types of muscle make up the muscularis propria (externa)?
A
- outer longitudinal
- inner circular
5
Q
What is the difference between the serosa and adventitia?
A
serosa is covered by peritoneum, while adventitia is not
6
Q
What are the 4 basic mucosal types found in the GI tract?
A
- Protective
- Secretory
- Absorptive
- Absorptive/protective
7
Q
Where is protective mucosa found?
A
- oral cavity
- pharynx
- oesophagus
- anal canal
8
Q
Where is secretory mucosa found?
A
only in stomach
9
Q
Where is absorptive mucosa found?
A
typical of entire small intestine
10
Q
Where is absorptive/protective mucosa found?
A
lines the whole of the large intestine
