D2 – Digestive Tract Microanatomy
3B – K23 Digestive Tract Microanatomy p. 1 of 1
A Esophagus
Mucosal Layer:
1. epithelial layer
(nonkeratinized squamous
epithelium)
2. lamina propria
3. muscularis mucosa
Submucosal Layer
4. submucosa
5. esophageal gland
Muscularis Layer:
6. circular layer
7. longitudinal layer
Serosa :
8. serosa
B Fundus of Stomach
Mucosal Layer:
1. outer mucous tissue (small
depression in
the mucous membrane of the
stomach)
2. actual mucous membrane
3. mucous gland of the fundus of
stomach
4. muscle layer in the mucous
membrane
Submucosal Layer
5. sub-muscous tissue
Muscularis Layer:
6. circular layer
7. longitudinal layer
8. external coat
9. serous tunic
10. peptic cell
11. parietal cell
12. mucous neck cell
C Jejunum (small intestine)
Mucosal Layer:
1. outer mucous tissue
2. crypt
3. actual mucous membrane
4. muscle layer in the mucous
membrane
5. sub-muscous tissue
Muscularis Layer:
6. circular layer
7. longitudinal layer
8. external coat
9. serous tunic
10. endocrine cell
11. paneth’s granular cell
D Colon
Mucosal Layer::
1. outer mucous tissue
2. crypt
3. actual mucous membrane
4. muscle layer in the mucous
membrane
Submucosal Layer
5. sub-muscous tissue
Muscularis Layer:
6. circular layer
7. longitudinal layer
8. external coat
9. serous tunic
10. goblet cell
11. enterocytes
