2007 Sensory Physiology

Cochlea structure

  • the fluid-filled cochlea is divided into 3 compartments called SCALAE
  • scala vestibuli and tympani contain perilymph, which has a composition similar to extracellular fluid
  • scala media contains endolymph, which has a high K+ concentration
  • the auditory receptor cells (called hair cells) are found in the organ of Corti, which is located on the basilar membrane separating scala tympani from scala media

Scalae

S&G Figure 10.40

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