Download A. Esophagus

This model illustrates the histology of four organs of the digestive system: esophagus, stomach, small
intestine and large intestine. The front of the model shows the tunics of the four organs: mucosa,
submucosal, muscularis externa, and serosa/adventitia. The back of the model shows unique
structures within the organs.
A. Esophagus
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Nonkeratinized stratified squamous epithelium of the mucosa
Lamina propria of mucosa
Muscularis mucosa
Submucosa
Esophageal gland
Circular layer of the muscularis externa
Longitudinal layer of the muscularis externa
Adventitia
B. Fundus of Stomach
1. Gastric pits with Simple columnar epithelium of the mucosa
2. Lamina propria
3. Gastic gland
4. Muscularis mucosa
5. Submucosal
6. Circular layer of the muscularis externa
7. Longitudinal layer of the muscularis externa
8. Areolar tissue of Serosa
9. Mesothelium (simple squamous epithelium ) of Serosa (visceral peritoneum)
10. Peptic cell
11. Parietal cell
12. Mucous neck cell
C. Jejunum of Small Intestine
1. Simple columnar epithelium of the mucosa
2. Intestinal crypt
3. Lamina propria
4. Muscularis mucosa
5. Submucosa
6. Circular layer of the muscularis externa
7. Longitudinal layer of the muscularis externa
8. Areolar tissue of Serosa
9. Mesothelium (simple squamous epithelium ) of Serosa (visceral peritoneum)
10. Endocrine cell
11. Paneth’s granular cell
D. Colon of Large Intestine
1. Simple columnar epithelium of the mucosa
2. Intestinal crypt
3. Lamina propria
4. Muscularis mucosa
5. Submucosa
6. Circular layer of the muscularis externa
7. Longitudinal layer of the muscularis externa
8. Areolar tissue of Serosa
9. Mesothelium (simple squamous epithelium ) of Serosa (visceral peritoneum)
10. Goblet cell
11. Enterocyte