Depressor septi nasi muscle

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Depressor septi nasi
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
Action: Depression of nasal septum
Dorlands/Elsevier m_22/12548771

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.

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 As such, some of the information contained herein may be outdated.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

hu:Musculus depressor septi nasi


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