Digastric branch of facial nerve Tags: Anatomical Structure, Nerve.The digastric branch of facial nerve arises close to the stylomastoid foramen and divides into several filaments which supply the posterior belly of the Digastricus; one of these filaments joins the glossopharyngeal nerve. thumbnail Dorlands prefix r_02 Dorlands suffix 12689898 Gray page 905 Gray subject 202 Learn more... Loading...