| Depressor septi nasi | |
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| 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 As such, some of the information contained herein may be outdated.
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