di·gas·tric mus·cle

(dī-gas'trik mŭs'ĕl)

1. One of the suprahyoid group of muscles consisting of two bellies united by a central tendon that is 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.

2. A muscle with two fleshy bellies separated by a fibrous insertion;
Synonym(s): musculus digastricus [TA] .

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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References in periodicals archive

In domestic animals such as cats and dogs, the caudal part is located at the occiptomandibular region of the digastric muscle and in close relation with the mandibular gland, which is easily separable after the removal of the common fibrous capsule.

Morphological aspects of the salivary glands of Crab-eating racoon (Procyon cancrivorus)/Aspectos morfologicos das glandulas salivares do Mao-pelada (Procyon cancrivorus)

Anatomical study of the digastric muscle: Variations in the anterior belly.

Digastric Muscle or Digastricmastoid Muscle?/?Musculo Digastrico o Musculo Digastricomastoideo?

In the present study, the separation took place over the medial surface of the middle part of the caudal belly of the digastric muscle 2.54.5 cm distal to the ventral pole of the CCG.

Topography and Morphology of the Bovine Cranial Cervical Ganglion and its Branches/ Topografia y Morfologia del Ganglio Cervical Craneal Bovino y sus Ramos

(30) The anterior belly of the digastric muscle is elongated with a strip of fascia or by releasing the posterior belly.

Reconstruction of the paralyzed face

The digastric muscle is a suprahyoid muscle formed by two muscle bellies: one anterior and the other posterior.

Anatomical study of the digastric muscle: variations in the anterior belly/Estudio anatomico del musculo digastrico: variacion en el vientre anterior

The nerve courses anteriorly to parallel the mylohyoid muscle, releasing branches that provide motor innervation to the mylohyoid and anterior belly of the digastric muscles (Clark et al., 1999).

Communication between the mylohyoid and lingual nerves: clinical implications/Comunicacion entre los nervios milohioideo y lingual: implicancias clinicas

* the branch to the posterior belly of the digastric muscle

Embryology

The results concluded that the lingual artery is found in a position more inferior than classicaly described, based on the digastric muscle and the hypoglossal nerve: and that the hyoid bone can be used as a point of reference for the surgical access to the lingual artery in the region of the anterior trigone of the neck.

Ligadura extraoral de la arteria Lingual: estudio anatomico y topografico

Nordstrom, "Asymmetric activation of motor cortex controlling human anterior digastric muscles during speech and target-directed jaw movements," Journal of Neurophysiology, vol.

Differential Corticomotor Excitability Responses to Hypertonic Saline-Induced Muscle Pain in Forearm and Hand Muscles

The lateral pterygoid is the principal opener muscle and also a major contributor to both protrusion and lateral excursion of the mandible.4 Other mandibular depressor muscles include the geniohyoid, mylohyoid, and the digastric muscles. The principal mandibular elevators are the masseter, temporalis and the medial pterygoids.5 Of particular importance are the pterygoids especially the lateral pterygoid that is involved in almost all movements of the TMJ in one way or another and has been the subject of much debate over the years.

EVALUATION OF PTERYGOID MUSCLES IN PATIENTS WITH TEMPOROMANDIBULAR DISORDERS

The antagonistic response from the digastric muscles pulls the jaw apart.

Temporomandibular dysfunction and the developing singer