lower esophageal sphincter

lower esophageal sphincter
The sphincter situated at the lower part of the esophagus.
Syn: cardiac sphincter, gastroesophageal sphincter, esophageal sphincter

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  • Esophageal sphincter — The term esophageal sphincter refers to one of two sphincters that are part of the esophagus: lower esophageal sphincter (also called cardiac sphincter or gastroesophageal sphincter) which leads into the cardia. upper esophageal sphincter (also… …   Wikipedia

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  • Esophageal dysphagia — arises from the body of the esophagus, lower esophageal sphincter, or cardia of the stomach. Usually due to mechanical causes or motility problems.cite web |url=http://www.aafp.org/afp/20000415/2453.html |title=Evaluation and Treatment of… …   Wikipedia

  • Esophageal motility study — Intervention Diagram of esophageal motility study in nutcracker esophagus. The disorder shows peristalsis with high pressure esophageal contractions exceeding 180 mmHg and contractile waves with a long duration exceeding 6 seconds …   Wikipedia

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  • Sphincter — A sphincter is an anatomical structure, or a circular muscle, that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. Sphincters are found in many animals; there …   Wikipedia

  • esophageal achalasia — failure of the lower esophageal sphincter to relax with swallowing due to degeneration of ganglion cells in the wall of the organ. The thoracic esophagus also loses its normal peristaltic activity and becomes dilated (megaesophagus). Barium meal… …   Medical dictionary

  • esophageal dilator — a bougie or similar instrument for dilation of an esophageal stricture or the lower esophageal sphincter …   Medical dictionary

  • esophageal manometry — a diagnostic study to assess the competence of the lower esophageal sphincter. A catheter sheathed with a water filled balloon is inserted nasally and advanced into the esophagus; a series of measurements reflecting esophageal resting pressures… …   Medical dictionary

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