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Their results confirmed David’s suspicions: The warm-blooded animals had less viscous endolymph and smaller and thinner canal shapes.

In the wake of the destruction, potassium ions build up in the inner ear fluid called endolymph, pulling in more liquid by osmosis.

Those canals are filled with a liquid called endolymph.

The whole of the labyrinth is membranous, and contains a fluid, the endolymph; between the membranous wall of the labyrinth and the enclosing bone is a space containing the perilymph.

It is filled with a liquid which at one place is called the perilymph, and at another place the endolymph.