What is the structure of the inner ear.

The inner ear consists of the vestibule, cochlea, and semicircular canals.
The snail performs the function of hearing. In the bone canal of the cochlea, there is a membranous labyrinth filled with endolymph (which in turn contains a lot of potassium). The space between the bony canal and the membranous canal is filled with perilymph, which contains a lot of sodium.
A sound-receiving apparatus is located in the membranous canal – this is an organ that consists of a membrane with receptor cells and an integumentary membrane. There are receptors on the membrane.