pass through the cochlea, are transformed into nerve impulses and sent to the brainforms in your outer ear and is meant to protect your ear from dirt and infectionreceives sounds and sends them through the auditory canal to the eardruma thin membrane that transmits sound waves into the middle earwhere the cochlea isa snail-shaped organ lined with hair cellsinside, small bones transmit sound waves from the eardrum to the inner eardestroyed by extended exposure to loud noise© 2016 Glynlyon, Inc.