What is the anatomy of the tubular esophagus relevant to esophageal motility disorders?

Updated: Dec 29, 2017
  • Author: Eric A Gaumnitz, MD; Chief Editor: Praveen K Roy, MD, AGAF  more...
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Answer

The tubular esophagus is a muscular organ, approximately 25 cm in length, and has specialized sphincters at proximal and distal ends. The upper esophageal sphincter (UES) is comprised of several striated muscles, creating a tonically closed valve and preventing air from entering into the gastrointestinal tract. The lower esophageal sphincter (LES) is composed entirely of smooth muscle and maintains a steady baseline tone to prevent gastric reflux into the esophagus.


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