- pharyngoesophageal sphincter
- upper esophageal s.
Medical dictionary. 2011.
pharyngoesophageal sphincter
Look at other dictionaries:
sphincter — A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice. SYN: musculus s. [TA], s. muscle [TA]. [G. sphinkter, a band or lace] s. of ampulla s. of hepatopancreatic ampulla. anatomic s.… … Medical dictionary
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
constrictio pharyngooesophagealis — [TA] pharyngoesophageal constriction: the narrowing where the pharynx ends and the cervical esophagus begins, the site of the pharyngoesophageal sphincter. Called also pharyngoesophageal junction … Medical dictionary
constriction — 1. [TA] A normally or pathologically constricted or narrowed portion of a structure. SYN: constrictio [TA]. SEE ALSO: stricture, stenosis. 2. The act or process of binding or contracting, becoming narrowed; the condition of being constricted.… … Medical dictionary
achalasia — Failure to relax; referring especially to visceral openings such as the pylorus, cardia, or any other sphincter muscles. [G. a priv. + chalasis, a slackening] a. of the cardia SYN: esophageal a.. cricopharyngeal a. functional … Medical dictionary
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