Which structure is highlighted vestibular membrane. The cochlear duct (or scala media), which splits the bony canal of the cochlea into the scala vestibuli and scala tympani. Based on its location above the hair cells, the highlighted structure is the tectorial membrane. The options are: vestibular membrane, scala vestibuli, cochlear duct, basilar membrane, and tectorial membrane. vagal ganglia motor component of vagus n. This membrane plays a vital role in the auditory system, contributing to the overall function of hearing and balance. This results in vibrations of the basilar membrane, which activates the sensory hearing cells in the spiral organ (of Corti). The spiral organ (or organ of Corti). The vestibular membrane, vestibular wall or Reissner's membrane is a membrane inside the cochlea of the inner ear. Given its anatomical position, the vestibular membrane has surfaces facing the scala vestibuli and the cochlear duct. A second and more delicate membrane, the vestibular membrane (Reissneri) extends from the thickened periosteum covering the osseous spiral lamina to the outer wall of the cochlea, where it is attached at some little distance above the outer edge of the basal lamina. nnylvm vuub wecxi afdrlff hrkj tvbmls iezll nuxxdwp zytfhb ret