Anterior belly of digastric

  • The anterior belly of the digastric (latin: venter anterior musculi digastrici) is one of the two bellies of the digastric muscle. The anterior belly is smaller than the posterior belly, and it develops from the first pharyngeal arch.

    The anterior belly of the digastric originates from the digastric fossa on the inner surface of the mandible, passes downward and backward, and inserts or turns into the intermediate tendon, which attaches to the hyoid bone.

    Upon contraction the anterior belly of the digastric muscle elevates the hyoid bone.

    The anterior belly of the digastric is innervated by the mylohyoid nerve, which comes from the mandibular division of the trigeminal nerve (CN V3).