part of part of located in located in innervated by innervated_by develops from develops from attached to attached to has muscle origin has muscle origin has muscle insertion has muscle insertion Homo sapiens mandibular nerve tensor tympani http://upload.wikimedia.org/wikipedia/commons/8/82/Gray912.png The division of the adductor mandibulae in the various lines of tetrapod evolution correlates with divergences in their methods of feeding. (...) As the jaws become stronger and their movements more complex in the line of evolution toward mammals, the adductor complex becomes divided into several distinct muscles (temporalis, masseter, pterygoideus, tensor tympani, tensor veli palati).[well established][VHOG] VHOG:0000698 musculus tensor tympani MESH:D013719 tympanic muscle eustachian muscle M. tensor tympani SCTID:244779001 Wikipedia:Tensor_tympani_muscle EHDAA:10167 MA:0001221 UBERON:0001600 The larger of the two muscles of the tympanic cavity, is contained in the bony canal above the osseous portion of the auditory tube. Its role is to dampen sounds produced from chewing. It arises from the cartilaginous portion of the auditory tube and the adjoining part of the great wing of the sphenoid, as well as from the osseous canal in which it is contained. Passing backward through the canal, it ends in a slender tendon which enters the tympanic cavity, makes a sharp bend around the extremity of the septum, known as the processus cochleariformis[1], and is inserted into the manubrium of the malleus, near its root[WP]. EMAPA:18587 FMA:49028 NCIT:C33748 UBERON:0005238 EHDAA:10191 UMLS:C0039529 tensor tympani muscle GAID:166 malleus bone middle ear pharyngotympanic tube muscle of auditory ossicle tympanic cavity manubrium of malleus tensor tympani pre-muscle condensation trigeminal nerve muscle