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The inner ear via the endolymphatic duct (ED) as well as the utricular duct and the duct between the saccule and cochlear duct (ductus reuniens). The endolymph in the ES is connected to that of other endolymphatic spaces of ES (endolymphatic sac), ED (Endolymphatic duct).ĭiagram of endolymphatic compartments, originally due to Spalteholtz (1914). It was first described by Cotugno, in 1760 (Corrales and Mudry, 2017).Īrtist's rendition of endolymphatic system. It contains endolymph, which is similar in chemical makeup to intracellular fluid (high in K, low in Na). Partly in the temporal bone and partly within the dura of the posterior fossa. The endolymphatic sac (ES) is a membranous structure in the inner ear located

There are also endolymphatic sac tumors associated with or without von Hippel-Lindau Disease (VHL) Endolymphatic system There are several ear disorders in which it is generally thought that pressure anomalies within the inner ear contribute to ear symptoms - these include Meniere's disease, Perilymph fistula, Enlarged vestibular aqueduct syndrome, superior canal dehiscence, and low spinal-fluid pressure syndromes.

Something like a "balloon within a balloon" arrangement. Within the inner ear, there are two types of fluid - endolymph (inner fluid), and perilymph (outer fluid), separated by a membrane.