channel for foramen of skull tympanic canal FMA:56460 tympanic canaliculus A minute canal that passes from the petrous portion of the temporal bone between the jugular fossa and carotid canal to the floor of the tympanic cavity and transmits the tympanic branch of the glossopharyngeal nerve. tympanic canal BIRNLEX:2561 UBERON:0026584 jacobson's canaliculus canaliculus tympanicus tympanic nerve