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pharyngoesophageal constriction


Definition: normal narrowing of the alimentary tract, demonstrated radiographically after a barium swallow, at the junction of the pharynx with the esophagus (C5 vertebral level) caused by the tonic or active contraction of the cricopharyngeal part of the inferior constrictor of the pharynx (upper esophageal sphincter).

Synonym(s): constrictio pharyngoesophagealisTA, upper esophageal constriction

See Also: cricopharyngeal part of inferior constrictor (muscle) of pharynx

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.