助聽器的兩三事

The anatomy of the hearing system can be divided into four components for our convenience in remembering the parts and associating these parts with their function.

These divisions are the:

    
 

     1. Outer ear 外耳
     2. Middle ear 中耳
     3. Inner ear 內耳
     4. Central auditory pathways 中樞聽覺通道