Issuu on Google+

Hearing Systems – How We Hear

The ear is not merely one part of our body but rather a hearing system consisting of several important fine structures and components. Every part must be working properly to have normal hearing. The part of the ear which we can easily see is the outer ear. It is comprised of skin and cartilage and forms a structure which is designed to catch, concentrate and direct sounds into the ear canal. Sounds travel through the ear canal to the ear drum. This is the beginning of the middle ear. The eardrum is a membrane designed to protect the inner portions of the ear. As the ear drum vibrates, it transmits sound energy to 3 tiny bones. These bones act as levers and amplify the energy before passing it on to the inner ear. The inner ear contains the cochlea which is a combination of fluid filled canals, membranes and hair cells. The vibrations move thought the fluid of the cochlea like waves in the ocean, bending membranes and hair cells. This movement triggers nerve impulses which are transmitted to the brain through the auditory nerve. The cochlea is an amazing organ given its ability to convert vibrations into sensitive nerve impulses. It is the reason why we are able to hear everything from the roar of the crowd at a sporting event to a sensitive bird call in the wild. These structures are designed to work together and any damage or deficiency in any part of it affects the overall hearing response. It is important to keep your ears clean and free of ear wax. You also need to protect the eardrum from perforations. The cochlea is so sensitive; it is not designed to handle excessive sound levels for long periods of time. It can also be damaged by diabetes, high blood pressure and smoking. Avoid loud music and noisy environments. Maintain good health. Protect your ears and the hearing systems will provide you with a wonderful auditory experience for years to come. South Bay Hearing Where Miracles Happens Everyday Call Today (310) 237 - 6044


Hearing Systems – How We Hear