How the hearing system works

 
 

The hearing system

The ear can be split into three sections:

  1. The outer ear
  2. The middle ear
  3. The inner ear

Sound reaches our ear via sound waves. The shape of the outer ear helps to collect sound waves and funnels them down the ear canal towards the eardrum (Tympanic Membrane).  
 
The sound waves cause the eardrum to vibrate, which in turn causes the three bones in the middle ear (the ossicles) to vibrate and amplify the sound waves through to the oval window of the inner ear.

The sensory hair cells that are along the length of the fluid filled cochlea are stimulated and electrical impulses are sent from the hair cells along the auditory nerve to the area of the brain where we interpret sound. Have you got a hearing loss?