What is the role of the cochlea in transmitting sound energy??

Question

what does the cochlea do?

What is its fuction in the ear?

Answer 1

sound vibrations are passed through the external ear, and external auditory canal, where they hit the eardrum.  the eardrum is made from ectoderm, mesoderm, and endoderm, from the first phayrngeal cleft.  This vibration is then transferred to the handle of the malleus, which is fused to the incus.  From there, the incus, vibrates the stapes bone, which cause the oval window to osscillate.  This send the perilymph fluid in the cochlea to start moving in waves.  these waves travel over the organ of corti, where they then disturb the endolymph that surroounds the tectorial membrane.  the movement of the tectorial membrane will activate the steriocilia. specifically the internal row of clila.  When the stereocilia are bent, they open mechanical gated ion channels, whcih allows potassium to rush into the cell (this is the opposute of the normal neuronal flow), causing a depolarization and subsequent acttion potential to flow through the vesitbular nerve to the basal ganglia.    htere's more after that too!

cheers, thanks for the review question

cohclea transfers vibrational sound energy to neuronal impulses based on frequency