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Histology of normal esophagus: (A) Longitudinal section of esophagus shows mucosa consisting of nonkeratinized stratified squamous epithelium (SS), lamina propria (LP), and smooth muscles of the muscularis mucosae (MM). Beneath the mucosa is the submucosa containing esophageal mucous glands (GL) that empty via ducts (D) onto the luminal surface. ×40. H&E. (B) Transverse section showing the muscularis halfway along the esophagus reveals a combination of skeletal muscle (right) and smooth muscle fibers (left) in the outer layer, which are cut both longitudinally and transversely here. This transition from muscles under voluntary control to the type controlled autonomically is important in the swallowing mechanism. ×200. H&E. Mescher AL. Junqueira's Basic Histology Text & Atlas, 12th ed. McGraw Hill Lange, New York: 2010. Page 260, Figure 15-14. Source: Pathology of the Gastrointestinal Tract, Pathology: A Modern Case Study Citation: Reisner HM. Pathology: A Modern Case Study; 2015 Available at: http://mhmedical.com/ Accessed: May 06, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved
