innervated by innervated_by surrounds surrounds attached to attached to has muscle origin has muscle origin has muscle insertion has muscle insertion oral opening skin of lip facial muscle facial nerve mandible skin of body maxilla orbicularis oris muscle FMA:46841 SCTID:244749008 orbicularis oris incisivii labii superioris incisivii labii inferioris MFMO:0000058 UBERON:0010933 The orbicularis oris is a superficial facial muscle with fibers that encircle the opening of the oral cavity that attaches to the maxilla, mandible, skin and modiolus, and that participates in oral/pharyngeal behaviors, and is innervated by the facial nerve (CN VII). orbicularis oris nasolabialis muscle Wikipedia:Orbicularis_oris_muscle facial modiolus