Radiopaedia Courses 25% Discount in response to COVID-19 ends on October 31 EXPLORE OUR COURSES


Perilymph is one of the two types of cochlear fluids, the other being endolymph. It is located in the scala vestibuli and scala tympani of the cochlea.

It is a clear fluid with an ionic composition very similar to cerebrospinal fluid as the scala tympani and scala tympani communicate directly with the subarachnoid space. It has a high level of sodium (Na+) ions and helps to generate the endolymphatic potential.

The endolymph and perilymph do not normally communicate.

See also

Anatomy: Head and neck

Anatomy: Head and neck

Article information

rID: 55298
System: Head & Neck
Section: Anatomy
Synonyms or Alternate Spellings:
  • Perilymph 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.