Library · Histology
Esophageal histology
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Esophageal histology shows a wall built in layers around a central space. The layer touching food is the mucosa, lined by stratified squamous epithelium: several rows of flat cells that withstand friction.
Underneath are the lamina propria and a thin band of muscle. Farther out come the submucosa, with vessels, glands, and supporting tissue; the muscularis propria, which moves the bolus; and the adventitia, a fibrous covering that anchors the esophagus to nearby tissues.
In brief
Esophageal histology begins at the lumen with a mucosa lined by stratified squamous epithelium, which consists of several layers of flat cells. Beneath it lie the lamina propria and a thin muscularis mucosae.
Concentric layers surround a central lumen.
Farther out are the submucosa, containing connective tissue, blood vessels, and glands; the muscularis propria, with circular and longitudinal layers; and the fibrous adventitia. This organization separates the friction-resistant lining from the muscle layers that propel food.
Sources (1)
- National Center for Biotechnology InformationPhysiology, Esophagus
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