1) increased pressure in perilymph of Scala vestibuli 2) pressure wave depresses basilar membrane 3) inner hair cells move closer to tectorial membrane 4) stereocilia bend 5) tip-link proteins open K+ channels 6) K+ ions enter the hair cell that causes depolarization
Membrane-covered opening from middle ear to the cochlea of the inner ear is oval widow . Sound waves causes vibration of the tympanic membrane and the ossicles transmit those vibrations to oval window, which leads to movement of fluid in the cochlea and activation of receptors for hearing.
The oval window (OW) is also known as the fenestra vestibuli or fenestra ovalis. It is bounded superiorly by prominence of the tympanic segment of the facial canal that is situated just above the superior edge of the oval window.
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Question: Place the following events in order starting with the vibration of the oval window and ending with the depolarization of hair cells.
Rank the options below
- Basilar membrane moves up and down
- Potassium ions enter hair cell causing depolarization
- Inner hair cell are pushed again the tectorial membrane
- Oval window vibrates
- Pressure wave travels through the perilymph of the Scala vestibule
- Stereocilia bend and tip-link proteins open potassium channels
