NEW! We're excited to announce two new radiology learning pathways by Andrew Dixon and Frank Gaillard LEARN MORE

Endolymph

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 (also colloquially called the 'battery of the cochlea') on the outer wall of the scala media. It has a high level of potassium ions (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 normally communicate.

See also

Anatomy: Head and neck

Anatomy: Head and neck

Article information

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

ADVERTISEMENT: Supporters see fewers/no ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.