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 (dī-găs′trĭk) Anatomy
Having two fleshy ends connected by a thinner tendinous portion. Used of certain muscles.
A muscle of the lower jaw that elevates the hyoid bone and assists in lowering the jaw.


(Anatomy) (of certain muscles) having two fleshy portions joined by a tendon
(Anatomy) a muscle of the mandible that assists in lowering the lower jaw
[C17: from New Latin digastricus (with two bellies), from di-1 + gastricus gastric, from Greek gastēr belly]


(daɪˈgæs trɪk)

1. (of a muscle) having two bellies with an intermediate tendon.
2. a muscle of the lower jaw serving to open the mouth.
[1690–1700; < New Latin digastricus. See di-1, gastric]
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References in periodicals archive ?
4 Other mandibular depressor muscles include the geniohyoid, mylohyoid, and the digastric muscles.
The antagonistic response from the digastric muscles pulls the jaw apart.
unusual insertion of the stylohyoid & digastric muscles, an unusual occurrence of levator submandibuli muscle (Banjo muscle), duplicated or other anomalies of omohyoid, anomalous belly of sternothyroid muscle or appearance of levator claviculae muscle (1-6).
The boundaries of the submental space are formed by the hyoid bone inferiorly, the mandible superiorly, and the anterior bellies of the digastric muscles bilaterally (figure).
that the C1 and C2 dorsal horns receive extensive primary afferent inputs from the lateral aspect of the face and from nerves of the craniofacial muscles such as those of the mandibular division of cranial nerve V supplying the masseter, temporalis, and anterior digastric muscles.
Comparative anatomic study of mandibular growth in rats after bilateral resections of superficial masseter, posterior temporal, and anterior digastric muscles.
The digastric muscles that presented anatomical variations were photographed using a Sony Cyber-shot DSC-T1 camera, with a Carl Zeiss Vario-Tessar lens and their bellies were measured using a universal pachymeter.
Although not considered to be muscles of mastication, the digastric muscles also play an important role in mandibular function.
The most important of these are the masseter and temporalis muscles, which close the jaw, and the digastric muscles, which open the jaw wide.
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.