Depressor septi nasi muscle

Depressor septi nasi muscle
Depressor septi nasi
Musculusdepressorseptinasi.PNG
Muscles of the head, face, and neck.
Latin musculus depressor septi nasi
Gray's subject #107 382
Origin incisive fossa of the maxilla
Insertion    nasal septum and back part of the alar part of nasalis muscle
Artery
Nerve Buccal branch of the facial nerve
Actions Depression of nasal septum

The depressor septi (Depressor alœ nasi) arises from the incisive fossa of the maxilla.

Its fibers ascend to be inserted into the nasal septum and back part of the alar part of nasalis muscle.

It lies between the mucous membrane and muscular structure of the lip.

Action

The depressor septi is a direct antagonist of the other muscles of the nose, drawing the ala of the nose downward, and thereby constricting the aperture of the nares.

Works like the alar part of the nasalis muscle.

External links


This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v · d · eList of muscles of head and neck: the head (TA A04.1, GA 4.378)
Extraocular (CN III, IV, VI)
Mastication (CN V3)

masseter · temporalis (sphenomandibularis) · pterygoid (lateral, medial)

fascia: Masseteric fascia · Temporal fascia · Deep portion: cementomaxillary tendon · Superficial portion: cementomandibular tendon
Facial (CN VII)
procerus · nasalis (dilatator naris) · depressor septi nasi  · levator labii superioris alaeque nasi
Palate/fauces (CN IX, X, XI)
(except TVP=V3)
veli palatini (tensor, levator) · musculus uvulae · palatopharyngeus (to pharynx) · palatoglossus (to tongue)
Tongue (CN XII)
extrinsic (genioglossus, hyoglossus/chondroglossus, styloglossus, and palatoglossus) · intrinsic (superior longitudinal, inferior longitudinal, transverse, vertical)

M: MUS, DF+DRCT

anat (h/n, u, t/d, a/p, l)/phys/devp/hist

noco(m, s, c)/cong(d)/tumr, sysi/epon, injr

proc, drug (M1A/3)

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