innervated by innervated_by develops from develops from has muscle insertion has muscle insertion facial nerve pharyngeal arch 2 hyoid muscle levator operculi UBERON:0011649 The depressor mandibulae of tetrapods, which opens the jaws, is the homologue of the levator operculi and epihyoidean. In mammals, the depressor mandibulae evolves into the stapedius (...).[well established][VHOG] TAO:0000537 ZFA:0000537 Hyoid muscle that originates at the ventrolateral margin of the pterotic and inserts in the dorsomesial edge of the opercle. The levator operculi is responible for jaw depression, its force of contraction is transmitted through the opercular series and the interoperculo-mandibular ligament to the lower jaw. levator operculi muscle levator operculae opercle