Upper covering layer of cochlear duct is: (A) Basilar membrane, (B) Tectorial membrane, (C) Stria vascularis, (D) Vestibular membrane
Answer is D. Reissner's membrane - between Scala vestibuli & Scala media. Basilar membrane - between scala media & Scala tympani Tectorial membrane - covers the hair cells. Stria vascularis gives the endolymph which is ultrafiltrate of blood.