The inner ear is a snail-shaped structure called the cochlea, which is filled with fluid. When the oval window vibrates, it causes the fluid in the cochlea to vibrate. This fluid surrounds a membrane running through the middle of the cochlea called the basilar membrane.
The answer of your question is the Basilar Membrane.
Cochlea
The cochlea is the main hearing-related organ of the inner ear. When it is damaged, permanent hearing loss is the result. Tiny "hair cells" on the cochlea are responsible for sensing specific sounds, and cochlea damage is caused by the bending and/or breaking of these "hair cells."
The section of the ear known as the cochlea is the part of the ear with sensory cells. Vibrations from outside the ear, go into the ear and vibrate the parts of the ear, then the vibration continues to the cochlea, which is a spiral-shaped sensory organ within the ear that the vibration goes through. The nerves in the cochlea translate the vibrations into nerve signals, which continue to the brain where it is processed into recognizable sound, such as speech.
vibrate at its natural frequency APEXX
you sweat
Different pitches vibrate the cochlea at different places
I'm guessing that the stapes vibrate against the cochlea. :)
Sound waves cause the thin skin of the eardrum to vibrate. This vibration, in turn, vibrates a chain of three tiny bones which are attached, at one end of the chain, to the eardrum, and at the other end of the chain, to a thin drumlike structure on on the opening to the cochlea. The vibration of this "round window" as it is called, causes the fluid inside the cochlea to flow, which in turn causes tiny hairs inside the cochlea to move. These hairs, when moved, send signals to the brain which are interpreted as sound.
basilar membrane
Sound is collected by the pinna (the visible part of the ear) and directed through the outer ear canal. The sound makes the eardrum vibrate, which in turn causes a series of three tiny bones (the hammer, the anvil, and the stirrup) in the middle ear to vibrate. The vibration is transferred to the snail-shaped cochlea in the inner ear; the cochlea is lined with sensitive hairs which trigger the generation of nerve signals that are sent to the brain.
Sound waves vibrate against your eardrum, hammer, anvil, stirrup, and cochlea.
it cause it to vibrate!
Cochlea
The middle ear contains the three auditory ossicles, which vibrate to transfer the sound to the cochlea in the inner ear.
Heat!
Heat energy from the source causes the particles to oscillate (vibrate) this chains and causes neighbouring particles to vibrate.
Once the last bone (the stapes) vibrates, it hammers up and down at a space called the oval window in the cochlea of the inner ear. The cochlea is filled with a fluid, and the vibrations of the stapes send pressure waves through the fluid. There is a membrane in the cochlea that is bent back and forth in different places based on the intensity of the sound, and the bending of the membrane causes small hair-like stereocillia to bend and send an electrical impulse to the brain to be interpreted as sound.