ALS, or amyotrophic laterals sclerosis, is a progressive neurodegenerative disease that affects nerve cells in the brain and the spinal cord. A-myo-trophic comes from the Greek language. A means no. Myo refers to muscle, and Trophic means nourishment â No muscle nourishment. When a muscle has no nourishment, it atrophies or wastes away.
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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.erilymph is the fluid contained within the bony 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.