pharyngoesophageal junction
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pharyngoesophageal diverticulum — n ZENKER S DIVERTICULUM * * * a diverticulum at the junction of the pharynx and esophagus, at the point of the Killian dehiscence; called also Zenker d … Medical dictionary
cushion — In anatomy, any structure resembling a pad or c.. anal cushions vascular prominences formed by clusters of normally sacculated veins of the superior rectal venous plexus, fed by arteriovenous anastomoses that cause their … Medical dictionary
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
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
body — 1. The head, neck, trunk, and extremities. The human b., consisting of head (caput), neck (collum), trunk (truncus), and limbs (membra). 2. The material part of a human, as distinguished from the … Medical dictionary
Laimer-Haeckerman area — a triangular area of sparse musculature just below the pharyngoesophageal junction, where Zenker diverticulum most frequently develops … 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
Diverticulum — A small bulging sac pushing outward from the colon wall is a diverticulum. As a person ages, pressure within the large intestine (colon) causes pockets of tissue (sacs) that push out from the colon walls. The plural is diverticula. Diverticula… … 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
