oropharyngeal isthmus


isth·mus of fau·ces

[TA] the constricted and short space that establishes the connection between the cavity of the mouth and the oropharynx, bounded anteriorly by the palatoglossal folds and posteriorly by the palatopharyngeal folds; the lateral well is the tonsillar fossa. Synonym(s): isthmus faucium [TA], oropharyngeal isthmus