Eardrum vibrations are transmitted to the cochlea by a piston consisting of

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The hammer, anvil, and stirrup (also known as the ossicles) all work together as a piston to transmit vibrations from the eardrum to the oval window of the cochlea. This mechanical amplification is necessary to overcome the difference in surface area between the eardrum and the oval window. Protruding hair cells, the basilar membrane, bipolar cells, and ganglion cells are all components of the cochlea, but do not play a direct role in transmitting vibrations from the eardrum.

Eardrum Vibrations Are Transmitted to the Cochlea by a Piston