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Pylorus and duodenum (40X)

Microimage
Pylorus and duodenum. Image copyright: University of Oslo, CC BY-NC-ND 4.0. (Tissue stain: H+E).

The mucous glands of the pylorus (Brunner's glands or duodenal glands) produce fluid with a low concentration of mucin. This mucous:

  • protects the duodenum from the acidic content of chyme (which is introduced into the duodenum from the stomach)
  • provides an alkaline condition for the intestinal enzymes to be active, thus enabling absorption to take place
  • lubricates the intestinal walls
Published September 4th 2021, updated September 5th 2021.