Secretory Surface Epithelia. Example: Amniotic Epithelium of a Human Fetus
Certain epithelial cells have secretory activities: The surface epithelium of the stomach synthesizes mucus, which serves as a protection against the corrosive effects of HC1 and pepsin, and the product of the surface epithelium of the gallbladder protects it against bile acids. The function of the simple cuboidal epithelium of the choroid plexus was mentioned in Plate 12.
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