Dilator naris muscle

Dilator naris muscle
Dilator naris muscle
Musculusdilatatornarisposterior.png
Muscles of the head, face, and neck.
Latin pars alaris musculi nasalis
Gray's subject #107 382
Origin margin of the nasal notch of the maxilla, greater and lesser alar cartilages
Insertion    skin near the margin of the nostril
Artery
Nerve Buccal branch of the facial nerve
Actions Dilation of nostrils

The Dilator naris muscle is a part of the nasalis muscle. It is divided into posterior and anterior parts.

  • The Dilator naris posterior is placed partly beneath the Quadratus labii superioris. It arises from the margin of the nasal notch of the maxilla, and from the lesser alar cartilages, and is inserted into the skin near the margin of the nostril.
  • The Dilator naris anterior is a delicate fasciculus, passing from the greater alar cartilage to the integument near the margin of the nostril; it is situated in front of the Dilatator naris posterior muscle.

External links

  • Mann DG, Sasaki CT, Fukuda H, Mann DG, Suzuki M, Hernandez JR (1977). "Dilator naris muscle". Ann. Otol. Rhinol. Laryngol. 86 (3 Pt 1): 362–70. PMID 869439. 

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 As such, some of the information contained within it may be outdated.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)
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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