Plate 10.189 Esophagus-Stomach Junction
Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger,
Peer Review Status: Externally Peer Reviewed
Dog, Helly's fluid, H. & E., 162 x.
Stratified squamous epithelium: Non-keratinized, it lines the esophagus. Indented by connective tissue papillae.
Epithelial transition: From the stratified squamous epithelium of the esophagus to the columnar epithelium of the stomach. Note that the transition is abrupt and that only the basal cells of the esophagus continue into the stomach.
Columnar epithelium: Tall simple columnar with basal nuclei. Continuous with the basal layers of esophagus epithelium. These cells secrete protective mucus constantly.
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