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Digestion and Absorption in the Gastrointestinal Tract - Gastrointestinal Physiology - Guyton and Hall Textbook of Medical Physiology, 12th Ed
![First portion of the duodenum showing the Brunner glands located on the submucosa on the circular folds or Kerckring valves. Here, the intestinal vill Stock Photo - Alamy First portion of the duodenum showing the Brunner glands located on the submucosa on the circular folds or Kerckring valves. Here, the intestinal vill Stock Photo - Alamy](https://c8.alamy.com/zooms/6/890145da92184d868fd83d6abb16df38/2e9gn76.jpg)
First portion of the duodenum showing the Brunner glands located on the submucosa on the circular folds or Kerckring valves. Here, the intestinal vill Stock Photo - Alamy
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