depressor septi

depressor septi

[sep′tī]
one of the three muscles of the nose. Arising from the maxilla and inserting into the septum and the posterior aspect of the ala, it lies between the mucous membrane and the muscular structure of the lip and is a direct antagonist of the other muscles of the nose. It is innervated by buccal branches of the facial nerve and serves to draw down the ala, constricting the nostril. Compare nasalis, procerus.
References in periodicals archive ?
The depressor septi nasi was released by blunt dissection in patients with a drooping nasal tip.
The direct influence of the depressor septi and the levator labii superioris alaeque nasi on the nasal valve is not yet clear.
infraorbital (zygomaticus major and minor, the levator labii superioris alaeque nasi, the superior part of the orbicularis oris, and possibly the compressor naris, the depressor septi nasi, the orbicularis oculi, the frontalis, the corrugator supercilii, and the procerus)