oval window

middle ear

Image: © 1998 Wadsworth Publishing Co./ITP.

The oval window is a membrane-covered opening that transmits vibrations from the middle ear to the inner ear. It lies above the round window. Vibrations of the eardrum are transferred across the middle ear by the auditory ossicles and transmitted to the inner ear by the oval window, which is connected to the third ear ossicle (the stapes).