Dilatator naris muscle
|Dilatator 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|
|Nerve:||Buccal branch of the facial nerve|
|Action:||Dilation of nostrils|
The Dilatator naris muscle is a part of the nasalis muscle. It is divided into posterior and anterior parts.
- The Dilatator 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 Dilatator 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.
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 As such, some of the information contained herein may be outdated.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.