Question

Cochlea contains

• A. Scala vestibuli
• B. Scala tympani
• C. Scala media
• D. All of the above

Answer 1

Answer: (D)

All of the above

Three scalae or chambers of cochlea are: the scala vestibuli (containing perilymph), which lies superior to the cochlear duct; the scala tympani (containing perilymph), which lies inferior to the scala media and terminates at the round window; the scala media (containing endolymph), or cochlear duct, a region of high potassium ion concentration and the stereocilia of the hair cells project into this region.