Dilator naris muscle

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Dilator naris muscle
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 andlesser alar cartilages
Insertion	skin near the margin of the nostril
Artery:
Nerve:	Buccal branch of the facial nerve
Action:	Dilation of nostrils
Dorlands /Elsevier	d_19/12297582

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.

[edit] 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 As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e List of muscles of head and neck: the head Extraocular (CN III, IV, VI) oblique (inferior, superior) - rectus (superior, inferior, medial, lateral) - levator palpebrae superioris (superior tarsal) Mastication (CN V3) masseter - temporalis - pterygoid (lateral, medial) Facial (CN VII) Ear auriculares (anterior, superior, posterior) - temporoparietalis Scalp/eyelid occipitofrontalis (occipitalis, frontalis) - orbicularis oculi (depressor supercilii) - corrugator supercilii Nose procerus - nasalis (dilatator naris) - depressor septi nasi - levator labii superioris alaeque nasi Mouth levator anguli oris - levator labii superioris - zygomaticus (major, minor) orbicularis oris - risorius - buccinator depressor anguli oris - depressor labii inferioris - mentalis Mouth/throat (CN IX, X, XI) (except TVP=V3) Soft palate veli palatini (tensor, levator) - musculus uvulae - palatopharyngeus (to pharnyx) - palatoglossus (to tongue) Pharynx pharyngeal constrictor (superior, middle, inferior) - longitudinal (stylopharyngeus, salpingopharyngeus) Larynx cricothyroid - cricoarytenoid (posterior, lateral) - arytenoid (oblique arytenoid/aryepiglottic, transverse arytenoid) - thyroarytenoid (vocal, thyroepiglottic) Tongue (CN XII) extrinsic (genioglossus, hyoglossus/chondroglossus, styloglossus) - intrinsic (superior longitudinal, inferior longitudinal, transverse, vertical)