human_reference_atlas Homo sapiens facial muscle depressor labii inferioris mentalis muscle http://upload.wikimedia.org/wikipedia/commons/3/37/Mentalis.png 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). mentalis muscle MFMO:0000122 mentalis muscle Wikipedia:Mentalis UBERON:0008596 musculus mentalis uberon FMA:46825 mentalis AS muscle of facial expression