Digestive system anatomy
Duodenum : Low Power. Feature : "packages" of glandular tissue (BRUNNER'S GLANDS) in the connective tissue between the muscularis mucosae and muscularis externa, i.e. in the submucosa. Occasionally you will see ducts of Brunner's gland which penetrate the muscularis mucosae and ascend through the lamina propria. Note that goblet cells are absent from these ducts.
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