Depressor septi nasi muscle

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Depressor septi nasi
Muscles of the head, face, and neck.
Details
Origin	Incisive fossa of the maxilla
Insertion	Nasal septum and back part of the alar part of nasalis muscle
Nerve	Buccal branch of the facial nerve
Actions	Depresses nasal septum, constricts nostril, moves apex of nose during movement of upper lip (e.g. talking)
Identifiers
Latin	musculus depressor septi nasi
TA98	A04.1.03.012
TA2	2065
FMA	46777
Anatomical terms of muscle [edit on Wikidata]

The depressor septi nasi muscle (or depressor alae nasi muscle) is a muscle of the face. It connects the incisive fossa of the maxilla and the orbicularis oris muscle to the nasal septum of the nose. It draws the ala of the nose downwards, reducing the size of the nostrils.