Scala tympani and vestibuli is drained by:
Ans: B (Perilymphatic duct) Ref: Grays Anatomy 40th EdExplanation:Perilymph:It fills the bony labyrinth (scala tympani & scala vestibule)It is similar to CSFIt is drained by perilymphatic duct into the adjoining subarachnoid spaceEndolymph:It fills the membranous labyrinthHas high K+ and low Na+ similar to intracellular fluidIt is produced by specialized cells in the wall of cochlear ductIt is drained via endolymphatic duct
Aqueduct of cochlea
Perilymphatic duct
Enolymphatic duct
Cochlear ly mphatics
Ear