Figure 1-8. Characteristics of sound.
(3) Sound waves reach the tympanic membrane and cause it to vibrate;
these membranes transmit vibrations into the middle ear.
(4) In the middle ear, those small bones called the auditory ossicles move in
response to the vibrations of the tympanic membrane. The movement of these small
bones causes the oval window into the inner ear to move.
(5) The oval window presses against the fluid in the cochlear channel
causing ripple-like waves.
(6) The waves of this fluid stimulate the hair cells of the organs of Corti,
which are located on the basilar membrane in the cochlea.
(7) Stimulation of the hair cells of the organs of Corti travels to the temporal
side of the brain.
The brain sends us the message that we hear sound.