
Jejunum or ileum
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

Mucosa
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

- Epithelium of enterocytes and goblet cells
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

- Lamina propria
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

- Muscularis mucosae
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

- Villi
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

- Intestinal glands
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

- Lacteals
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

Muscularis externa, inner circular
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

Muscularis externa, outer longitudinal
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

Serosa
The evaginations (villi) and invaginations (intestinal glands) of the epithelium are evident. Lacteals are centrally located in the villi. This portion of the small intestine is surrounded by a serous membrane. 100x

Meissner’s plexus >
Meissner’s plexus of the autonomic nervous system is visible in the submucosa; it innervates the muscularis mucosae. Auerbach’s plexus is located between and innervates the inner circular and outer longitudinal layers of muscularis externa.

Auerbach's plexus
Meissner’s plexus of the autonomic nervous system is visible in the submucosa; it innervates the muscularis mucosae. Auerbach’s plexus is located between and innervates the inner circular and outer longitudinal layers of muscularis externa.