Depressor anguli oris muscle
This article includes a improve this article by introducing more precise citations. (May 2015) ) |
Depressor anguli oris | |
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depresses angle of mouth | |
Identifiers | |
Latin | musculus depressor anguli oris |
TA98 | A04.1.03.026 |
TA2 | 2076 |
FMA | 46828 |
Anatomical terms of muscle] |
The depressor anguli oris muscle (triangularis muscle) is a
Structure
The depressor anguli oris arises from the lateral surface of the
The depressor anguli oris muscle receives its blood supply from a branch of the facial artery.
Nerve supply
The depressor anguli oris muscle is supplied by the marginal mandibular branch of the facial nerve.[1]
Function
The depressor anguli oris muscle is a
Clinical significance
Paralysis
Damage to the
Hypoplasia/aplasia
Underdevelopment (hypoplasia) or complete absence (aplasia) of the depressor anguli oris can occur.[2] Similarly to paralysis, individuals with these conditions will have an asymmetric smile.[medical citation needed] These conditions are rare, and develop at or before birth (congenitally).
See also
Additional images
This gallery of anatomic features needs cleanup to abide by the medical manual of style. ; please improve or remove the gallery accordingly. (May 2015) |
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Position of depressor anguli oris muscle
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Mandible, outer surface, side view
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The arteries of the face and scalp
References
This article incorporates text in the public domain from page 383 of the 20th edition of Gray's Anatomy (1918)
- ^ PMID 15308395.
- ^ "Hypoplasia: Where it can occur, causes, effects, and treatment options". 13 November 2020.