Which structure(s) in the ear is (are) responsible for displacing fluid within the cochlea?

Question

Quizplus · Accepted Answer

The oval window, located at the base of the cochlea, is responsible for displacing fluid within it in response to vibrations from the middle ear. This displacement causes movement of the hair cells in the basilar membrane, which ultimately result in the generation of neural signals that are sent to the brain for processing. The eardrum and the middle ear bones (malleus, incus, and stapes) are involved in transmitting sound waves from the external ear to the inner ear, but do not directly displace fluid within the cochlea.

Which Structure(s) in the Ear Is (Are) Responsible for Displacing