Anatomical variation of the anterior belly of the digastric muscle: case report and clinical implications
Braz. j. morphol. sci
;
28(1): 72-75, Jan.-Mar. 2011. ilus
Article
in English
| LILACS
| ID: lil-644126
ABSTRACT
The digastric muscle is a suprahyoid muscle composed of two bellies connected by an intermediate tendon.This muscle participates in deglutition and mandibular movements. The anterior belly of the digastric muscleis localized superficially to the mylohyoid and deeply to the platysma muscle. During dissection of this regionof an embedded cadaver, an accessory anterior belly of digastric muscle was observed bilaterally. The accessorybellies were similar but not symmetrical. They were composed of two segments, one long and one short, onboth sides, and when observed together these appeared to form the letter X. The accessory fibers, on bothsides, originated from the anterior digastric muscle and inserted medially to the digastric fossa. Anatomicvariations of the digastric muscle may influence mastication and deglutition. Moreover, the accessory digastricmuscle affects diagnostic imaging and therapeutic procedures in head and neck surgery and must be consideredin procedures involving this area.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Pharyngeal Muscles
/
Deglutition
/
Mastication
Limits:
Adult
/
Humans
/
Male
Language:
English
Journal:
Braz. j. morphol. sci
Journal subject:
Anatomy
Year:
2011
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Nove de Julho University/BR
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