
The palatopharyngeal arch (pharyngopalatine arch, posterior pillar of fauces) is larger and projects farther toward the middle line than the Palatoglossal arch; it runs downward, lateralward, and backward to the side of the pharynx, and is formed by the projection of the Pharyngopalatinus, covered by mucous membrane. ...
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http://en.wikipedia.org/wiki/Palatopharyngeal_arch

One of a pair of ridges or folds of mucous membrane which passes 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 oropharynx. ... Synonym: arcus palatopharyngeus, phary...
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http://www.encyclo.co.uk/local/20973

the posterior of the two folds of mucous membrane on each side of the oropharynx, connected with the soft palate and enclosing the palatopharyngeal muscle.
Found on
http://www.encyclo.co.uk/local/21001

Type: Term Definitions: 1. 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. Synonyms: arcu...
Found on
http://www.medilexicon.com/medicaldictionary.php?t=6012
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