Muscle: Digastric (Suprahyoid muscle)

Origin:

Anterior belly - Digastric fossa of mandible

Posterior belly - Mastoid notch of temporal bone

Insertion: Intermediate tendon to body and greater horn of hyoid

Innervation:

Anterior belly - Nerve to mylohyoid, a branch of inferior alveolar nerve

Posterior belly - Digastric (preparotid) branch of facial nerve (CN VII)

Main Action(s): Working with infrahyoid muscles, depresses mandible against resistance; elevates and steadies hyoid during swallowing and speaking