The anatomy of the ear is precisely shaped to capture sound waves and amplify them. When sound waves enter the ear they follow what might seem like a long and arduous path. But every ‘station’ has a precise function. This is how it works:  
       
     
       
  1.  Sound waves are picked up by the outer ear, which is made of up the pinna and the ear canal.  
  2.  Sound is channeled to the eardrum, which vibrates when sound waves touch it.  
  3.  The vibrations are picked up by 3 tiny bones known as the malleus, incus, and stapes, which create a bridge from the eardrum to the inner ear.  
  4.  The vibrations move on the cochlea, a spiral shaped capsule housing a system of fluid-filled tubes. When the sound waves reach the fluid it begins to move, setting thousands of tiny hair cells in motion.  
       
  The movements of the hair cells are transformed into electric impulses that travel along the auditory nerve to the brain itself. The brain decodes and interprets the electronic impulses, turning a stream if speech sounds into separate, recognizable words.  
       
       

 
 
 
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