Submucosa
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are unique to the duodenal segment of small intestine and are most numerous in its proximal regions. 40x
Mucosa
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Epithelium
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Lamina propria
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Muscularis mucosae
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Villi
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Lacteal
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- MALT
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Intestinal glands
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
Submucosa
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Submucosal glands (Brunner's glands)
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
Plica circularis
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
Muscularis externa
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Inner circular layer
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
- Outer longitudinal layer
In the duodenum, seen here, the submucosa also contains a mucus-secreting gland, named Brunner’s gland. This submucosal gland secretes an alkaline mucus that protects the intestinal mucosa from acidic gastric chyme. These glands are most numerous in the proximal regions of the duodenum. 40x
Adventitia >
The initial 2-3 centimeters of the duodenum is intraperitoneal, the remainder is retroperitoneal until it joins with the stomach. Both regions of the duodenum are visible in this section. The region to the left is retroperitoneal and thus only an adventitia is present. The intraperitoneal section is to the right and is covered by a serosa consisting of the adventitia along with the visceral peritoneum.
Serosa
The initial 2-3 centimeters of the duodenum is intraperitoneal, the remainder is retroperitoneal until it joins with the stomach. Both regions of the duodenum are visible in this section. The region to the left is retroperitoneal and thus only an adventitia is present. The intraperitoneal section is to the right and is covered by a serosa consisting of the adventitia along with the visceral peritoneum.
Image source >
This image was taken of a slide in the University of Virginia collection.
PREVIOUS