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digastric muscle
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Illustration of the human neck showing labeled muscles, arteries, veins, and bones, including the sternocleidomastoid, digastric, mylohyoid, trapezius, carotid artery, jugular vein, clavicle, and thyroid cartilage.
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digastric muscle

anatomy
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Illustration of the human neck showing labeled muscles, arteries, veins, and bones, including the sternocleidomastoid, digastric, mylohyoid, trapezius, carotid artery, jugular vein, clavicle, and thyroid cartilage.
muscles of the neck; human muscle system Muscles of the neck.

The digastric muscle is a pair of muscles that play a role in depressing the lower jaw and raising the hyoid bone during swallowing. This muscle is innervated by both the mandibular division of the trigeminal nerve (the fifth cranial nerve) and the facial nerve (the seventh cranial nerve). The trigeminal nerve innervates the anterior belly of the digastric muscle, while the facial nerve innervates the posterior belly. This dual innervation reflects the muscle's complex embryological origin from different pharyngeal arches.12

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3 Britannica Sources
  1. digastric
  2. human nervous system - Mandibular nerve
  3. muscle - Tetrapod musculature

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