In most cases, sound gets to our ears thru the air (= g…
In most cases, sound gets to our ears thru the air (= gas) and these pressure waves eventually get directed to the liquid environment (endolymph/ perilymph) of the inner ear. Due to this transition (from gas to liquid), the signal requires amplification… this structure, along with its two close “cousins” nearby, help increase the vibrations going into the cochlea.