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The Collaborative International Dictionary
Perilymph

Perilymph \Per"i*lymph\, n. (Anat.) The fluid which surrounds the membranous labyrinth of the internal ear, and separates it from the walls of the chambers in which the labyrinth lies.

Wiktionary
perilymph

n. An extracellular fluid found in the scala tympani and scala vestibuli of the cochlea.

WordNet
perilymph

n. the bodily fluid that fills the space between the bony labyrinth and the membranous labyrinth of the inner ear

Wikipedia
Perilymph

Perilymph (also known as Cotunnius' liquid, and liquor cotunnii) is an extracellular fluid located within the cochlea (part of the inner ear) in two of its three compartments: the scala tympani and scala vestibuli. The ionic composition of perilymph is comparable to that of plasma and cerebrospinal fluid. The major cation (positively charged ion) in perilymph is sodium: The values of sodium and potassium concentration in the perilymph are 138 mM and 6.9 mM, respectively.

Usage examples of "perilymph".

The outer portion is surrounded by a membrane which serves as periosteum to the bone and, at the same time, holds the liquid belonging to this part, called the perilymph.