arcus palatini


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pal·a·to·glos·sal arch

[TA]
one of a pair of ridges or folds of mucous membrane passing from the soft palate to the side of the tongue; it encloses the palatoglossus muscle and forms the anterior margin of the tonsillar fossa. Also demarcates the oral cavity from the isthmus of fauces.

arcus palatini

An obsolete term that formerly regarded the palatoglossal and palatopharyngeal arches as a single structural unit.