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. Trichrome stain, 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. Trichrome stain, 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. Trichrome stain, 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. Trichrome stain, 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. Trichrome stain, 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. Trichrome stain, 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. Trichrome stain, 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. Trichrome stain, 100x
Submucosa
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. Trichrome stain, 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. Trichrome stain, 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. Trichrome stain, 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. Trichrome stain, 100x
Submucosal plexus (Meissner’s plexus) >
The submucosal plexus (Meissner’s plexus) of the autonomic nervous system is visible in the submucosa; it innervates the muscularis mucosae. The myenteric plexus (Auerbach’s plexus) is located between and innervates the inner circular and outer longitudinal layers of muscularis externa.
Myenteric plexus (Auerbach's plexus)
The submucosal plexus (Meissner’s plexus) of the autonomic nervous system is visible in the submucosa; it innervates the muscularis mucosae. The myenteric plexus (Auerbach’s plexus) is located between and innervates the inner circular and outer longitudinal layers of muscularis externa.