Question

Vibrations of fenestra ovalis are transmitted to

• A. Perilymph of scala vestibuli
• B. Perilymph of scala tympani
• C. Endolymph of scala media
• D. Endolymph of scala vestibuli

Answer 1

The correct option is A Perilymph of scala vestibuli

The vestibular duct or scala vestibuli is a perilymph-filled cavity inside the cochlea of the inner ear, that conducts sound vibrations to the cochlear duct. The stapes receives vibrations from the incus (to which it is connected laterally), and transmits these to the oval window (fenestra ovalis), medially. The scala vestibuli is filled up with perilymph. Vibrations of fenestra ovalis are transmitted to the scala vestibuli.

So, the correct answer is option A.