digastric (muscle)


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di·gas·tric (mus·cle)

[TA]
1. one of the suprahyoid group of muscles consisting of two bellies united by a central tendon that passes through a fascial loop connected to the body of the hyoid bone; origin, by posterior belly from the digastric groove medial to the mastoid process; insertion, by anterior belly into lower border of mandible near midline; action, elevates the hyoid when mandible is fixed; depresses the mandible when hyoid is fixed; nerve supply, posterior belly from facial, anterior belly by nerve to the mylohyoid from the mandibular division of trigeminal; Synonym(s): musculus biventer [TA], musculus digastricus [TA], two-bellied muscle [TA], biventer mandibulae, musculus biventer mandibulae
2. a muscle with two fleshy bellies separated by a fibrous insertion;

di·gas·tric (mus·cle)

(dī-gastrik mŭsĕl) [TA]
One of suprahyoid group of muscles consisting of two bellies united by a central tendon that passes through a fascial loop connected to the body of the hyoid bone; elevates the hyoid when mandible is fixed; depresses the mandible when hyoid is fixed.
Synonym(s): musculus digastricus.