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Medical Term:

palatopharyngeal arch


one of a pair of ridges or folds of mucous membrane that pass downward from the posterior margin of the soft palate to the lateral wall of the pharynx. It encloses the palatopharyngeus muscle and forms the posterior margin of the tonsillar fossa. It also demarcates the isthmus of fauces from the oropharynx.

Synonym(s): arcus palatopharyngeusTA, plica posterior faucium, posterior pillar of fauces, pharyngopalatine arch, posterior palatine arch

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.