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3BHow Your Hearing Works
coming from the front of you will be collected and channeled, and then
translated differently from those sounds that are coming from behind
your back. You are able to place the sound horizontally - whether it is
coming from the left or right because the sound waves will actually
reach the respective ear faster. If your son is calling you and he is
standing to your left, the vibrations he is creating will hit your left ear
before they make it to the right. The information that gets transferred
to the brain will alert you that the sound is coming from your left side.
The Ear Canal
Measuring roughly an inch in length and about ¼ inch in diameter, the
ear canal carries the sound that is captured by the pinnae into the
middle ear - to the eardrum. The canal is funnel shaped and sloped to
ensure that no water is collected close to the eardrum under normal
conditions. It is sized and shaped for maximum efficiency in delivering
sound to the middle and the inner ear, and also to keep the area free
from infection.
Earwax
Earwax, also known as cerumen, is produced in the outer part of the ear
canal to lubricate and clean the interior part of the canal. Earwax
should not cause problems for most people as it helps to rid the ear
canal from dead skin cells. Earwax also defends the ear against dirt and
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