system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Perilymph contains:
assistant
The correct answer is  (a) Na+(Ref. Shambaugh, 6th ed., page 79)Perilymph is the fluid which fills the bony labyrinth.Perilymph is actually an extension of CSF which enters from the subarachnoid space into the scala tympani through Cochlear aqueduct.CSF being an extracellular fluid therefore perilymph is rich in Na+.Endolymph filling the membranous labyrinth and secreted from stria vascularis is rich in K+.