attached to has muscle origin has muscle insertion facial muscle mandible lower lip chin mentalis muscle SCTID:244744003 A muscle of facial expression, innervated by the facial nerve, attached to the skin of the lower lip and inferior to the lower lip (in humans this region is called the chin or mental region), the orbicularis oris muscle, and the mandible in the symphyseal region. See Diogo et al., 2009; Burrows et al., 2011). MFMO:0000122 Wikipedia:Mentalis UBERON:0008596 musculus mentalis FMA:46825 mentalis orbicularis oris muscle digestive system element lateral structure mandibular symphyseal region