Hearing and Hearing Loss The ear - parts and functions

The ear consists of three sections: outer ear, middle ear and inner ear.

Roll over the headings and picture below to see a description of the three sections of the ear, and each of their relevant parts.

  • Outer ear
  • Middle ear
  • Inner ear
<strong class='heading'>Pinna</strong> Directs sound waves into the ear canal. <strong class='heading'>Ear canal</strong> Directs sound waves into the ear drum and protects the ear drum. <strong class='heading'>Temporal bone</strong> Protects the inner ear. <strong class='heading'>Temporal bone</strong> Protects the inner ear. <strong class='heading'>Ear drum</strong> Connects the outer ear and middle ear and turns sound waves into vibrations. <strong class='heading'>Middle ear bones</strong> Consists of the malleus, incus and stapes. These bones vibrate in response to the ear drum moving and carry the sound vibrations into the inner ear. <strong class='heading'>Eustachian tube</strong> Equalises air pressure in the middle ear. <strong class='heading'>Balance organ</strong> Contains hair cells which help maintain balance. <strong class='heading'>Cochlea</strong> Hair cells of the cochlea move to sound vibrations, generating electrical signals and stimulating the auditory nerve. <strong class='heading'>Auditory nerve</strong> Sends electrical signals to the auditory cortex in the brain for processing.