We know very little about the anatomy of the ear and its functioning. But what we do know, we can share with you. Our ears contain three important components: the external, middle and inner ears. The external ear includes the skin around the ear and the cartilage. The middle ear contains the three small bones called ossicles (ossa meaning bone). The inner ear is filled with a fluid (endolymph) containing the hair cells, the nerve cells and the synapses. A chain of muscles are attached to the middle ear and allow the eardrum to vibrate at newaudition different frequencies. Muscles attached to the inner ear stimulate the hair cells to produce the sound we hear. All of this takes place within the bony inner ear and is surrounded by fluid, not air. The outer layer of the cochlea consists of the organ of Corti, which is the site of auditory perception and transduction. The function of the organ of Corti is to convert mechanical waves into electrical signals via the sensory cells and also to amplify these signals.