depressor septi nasi muscle


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de·pres·sor sep·ti na·si mus·cle

(dĕ-prĕs'ōr sep'tī nā'sī mŭs'ĕl)
Origin, facial muscle of nose; a vertical fasciculus from maxilla superior to central incisor passing upward along median line of upper lip to insert into mobile part of nasal septum; action, works with alar (dilator) part of nasalis muscle to widen the nares during deep inspiration; depresses septum; nerve supply, buccal branch of facial.
Synonym(s): musculus depressor septi [TA] , depressor muscle of septum.