CSF is similar to: (A) Endolymph, (B) Perilymph, (C) Coilymph, (D) Urine
Answer is B. Perilymph resembles extracellular fluid and rich in Na ions. It communicates with CSF through aqueduct of the cochlea which opens into scala tympani near the round window. Reference: Dhingra 6th edition.