Endolymph

Dr Craig Hacking and Dr Maxime St-Amant et al.

Endolymph is one of the two types of cochlear fluids, the other being perilymph. It is located in the scala media of the cochlea.

It is secreted by the stria vascularis (colloquially called 'battery of the cochlea') on the outer wall of the scala media. It has a high level of potassium (K+) and generates a current called the endolymphatic potential, with positivity inside the scala media and negativity outside its wall (approximately 80 mV more positive than the perilymphatic compartment).

The endolymph and perilymph do not communicate.

See also

Anatomy: Head and neck
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Article information

rID: 55297
System: Head & Neck
Section: Anatomy
Synonyms or Alternate Spellings:

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