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Hearing difficulties, ear structure and ear function.

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Hearing difficulties, ear structure and ear function. This report is on the structure of the ear, the function of the ear and the different types of difficulties people can have with hearing and the ears themselves. What the ear does Your ears are in charge of collecting sounds, processing them, and sending sounds signals to your brain. Your ears also help you keep your balance. So if you bend down to pick something up you won't fall down. How the ear works Your ear is made up of three sections: outer ear, middle ear and the inner ear. These parts all work together so you can hear and process sounds. The outer ear This part of the ear is called the pinna or auride and is the part that catches the sound waves. The outer ear also includes the ear canal, where ear wax is produced. Earwax is a lubricant that protects the canal. ...read more.


When the vibrations reach the cochlea they cause hairs on the cells to move, creating nerve signals that the brain understands as sounds. Balance In the inner ear, there are three small loops above the cochlea called semicircular canals. Like the cochlea they are also filled with liquid and have millions of tiny microscopic hairs. When you move your head the liquid in the semicircular canals move too. The liquid moves the tiny hair, which sends a never message to the brain about the position of your head in less then a second, your brain sends messages to the right muscles so you keep your balance. Some the liquid in the semicircular canals keeps moving after you've stopped moving, this causes you to feel dizzy because the hairs in the canals still sense movement your brain gets two different messages and is confused about the position of your hear. Once the fluid stops moving, your brain gets the right message and you regain your balance. ...read more.


Common treatments include medicine, operations, hearing aids, or assistive listening devices, which emphasize voices and help the person hear better in noisy settings. With treatment, most people will be able to hear normally again. Hearing aids are kind of like tiny microphones. They help someone hear sounds better and can even pick up the sounds so that what is hear is more clear. Hearing aids deliver amplified sounds (via sound vibrations) from the eardrum and middle ear to the inner ear or cochlea. Hearing aid technology is available that can adjust the volume of sounds automatically. For some people who are not able to hear or understand words even with the help of hearing aids, there is a device called a cochlear implant. This is a very tiny piece of electronic equipment that is put into the cochlea during an operation. It takes over the job of the damaged or destroyed hair cells in the cochlea by turning sounds into electrical signals that stimulate the hearing nerve directly. ...read more.

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