Module 5: Digestive system: Layers of GI tract Flashcards
1
Q
4 layers from lumen out
A
Mucosa
Submucosa
Muscularis
Adventitia
2
Q
3 layers of the Mucosa layer
A
Epithelial lining Lamina propria (supporting connective tissue) Muscularis mucosae (smooth muscle)
3
Q
Submucosa layer consists of
A
layer of loose connective tissue supports mucosa
Contains large blood vessels, nerves and lymphatics
Collagenous and adipose tissue
Binds mucosa to muscularis wall
4
Q
Muscularis layer
A
inner circular and outer longitudinal layer of smooth muscle
ONLY STOMACH contains third inner oblique layer
5
Q
Adventitia layer
A
outer layer of connective tissue
Conducts major vessels and nerves
6
Q
serosa or visceral peritoneum
A
the name given to the adventitia layer that is exposed to the abdominal cavity
7
Q
mesothelium
A
simple squamous epithelium that lines serosa
8
Q
GALT
A
lymphoid tissue in aggregations distributed throughout GI tract.
