arcus palatini

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. Synonym(s): arcus palatoglossus [TA], anterior pillar of fauces ☆ , plica anterior faucium ☆ , anterior palatine arch, arcus glossopalatinus, glossopalatine arch, glossopalatine fold

arcus palatini

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