1. Digestive Tract Esophagus (No.2) Stomach (No.25)
Small intestine (N0.1)
Large intestine (No.26)
Jun Zhou
School of Medicine, Zhejiang University

2. Mucosa
Submucosa
Muscularis externa
Adventitia
Esophagus (No.2)

3. Mucosa Epi. Submucosa Muscularis externa Lamina propria
Muscularis mucosae
Submucosa
LCT
Mucus-secreting glands
Muscularis externa

4. Mucosa
Epi.
Lamina propria
Muscularis mucosae

5. Mucus –secreting glands in the submucosa
Muscularis mucosae
ducts
Mucus-secreting glands
Mucus –secreting glands in the submucosa

6. Esophagus: adventitia
Muscularis externa
Esophagus: adventitia

7. Mucosa
Submucosa
Muscularis externa
Stomach (No.25)
Serosa

8. Mucosa of stomach Epithelium (mucus secreting cells) Parietal cell
Lamina propria
Chief cell
Muscularis mucosae
Mucosa of stomach

9. Mucosa
Epithelium
Mucus secreting cells
Lamina propria
CT, Gastric gland
Muscularis mucosae
Stomach

10. Parietal cells In the neck and body of the glands Column or pyramidal
Eosinophilic cytoplasm
Parietal cells

11. Chief cells In the body and base of the glands Columnar
Basophilic cytoplasm
Chief cells

12. Muscularis externa
Myenteric plexus

13. Small intestine Mucosa epi. lamina propria muscularis mucosa Submucosa
Muscularis externa
Serosa
Luminal surface modification:
1.Plicae circulares
2.Intestinal villi
3.Microvilli

14. Mucosa
Submucosa
Muscularis externa
Serosa
Human jejunum

15. Villus Epithelium 1.absorptive cell striated border (microvilli)
2.Goblet cell
Lamina propria
CT+SM

16. Intestinal glands
Columnar cells
Goblet cells
Paneth cells
at the base of the crypts
3-5 in a group
Acidophilic G.

17. Muscularis externa
Myenteric plexus

18. Serosa CT
Mesothelium

19. Large intestine
Small intestine

20. No villi
No Paneth cell
Numerous Goblet cells

21. Large intestine: Muscularis externa with myenteric plexus

22. THE END