I drew this picture of the cochlea showing some detailed structure and function, about 15 years ago.
<a href="https://en.wikipedia.org/wiki/User:Dicklyon" class="extiw" title="wikipedia:User:Dicklyon">Dicklyon</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
Transferred from <span class="plainlinks"><a class="external text" href="https://en.wikipedia.org">en.wikipedia</a></span> to Commons by <a href="//commons.wikimedia.org/wiki/User:Mike.lifeguard" title="User:Mike.lifeguard">Mike.lifeguard</a>.