perilymphatic duct
perilymph duct

Neither is the channel for the perilymphatic duct, which is a tube that leaves the lagena.

The extent of its perilymphatic duct resembled those of Varanus, crocodillians, and birds.

Doleserpeton has a structure in the inner ear called the perilymphatic duct, which is also seen in frogs and is associated with hearing.

Running parallel with the perilymphatic duct is a separate blind-ending duct, the lagena, filled with endolymph.

From here, sound waves are conducted through a short perilymphatic duct to a second opening, the round window, which equalizes pressure, allowing the incompressible fluid to move freely.

In most reptiles the perilymphatic duct and lagena are relatively short, and the sensory cells are confined to a small basilar papilla lying between them.

CSF pressure abnormalities do not generally have clinical impact on the inner ear which is explained physically by the bore diameter of the perilymphatic duct and its length.

The lagena is separated from the perilymphatic duct by a basilar membrane, and contains the sensory hair cells that finally translate the vibrations in the fluid into nerve signals.

In the anatomy of the human ear, the perilymphatic duct is where the perlyphatic space (i.e., the vestibule of the inner ear) is connected to the subarachnoid space.

Perilymph is the fluid contained within the osseus labyrinth, surrounding and protecting the membranous labyrinth; perilymph resembles extracellular fluid in composition (sodium salts are the predominate positive electrolyte) and, via the perilymphatic duct, is in continuity with cerebrospinal fluid.