THE
MIDDLE EAR: FACING THE BATTLE HEADS ON
The middle ear is the
portion of the ear between the outer ear and the inner ear. Here, sound waves
become mechanical vibrations and impedance matching occurs.
Structure:
The middle ear begins with
the eardrum at the end of the ear canal. The middle ear contains three tiny
bones, called the ossicles. These three bones form a
connection from the eardrum to the inner ear. As sound waves hit the eardrum,
the eardrum moves back and forth causing the ossicles to move. As a result, the
sound wave is changed to a mechanical vibration.
Function:
· The function of the middle ear is to carry
the vibrations from the external ear to the inner ear. When sound vibrations
enter the ear, the eardrum vibrates. The vibration of the eardrum makes the
ossicles vibrate. The ossicles, in turn, amplify these vibrations and carry
them to the inner ear, where they will be translated into electric signals and
sent to the brain.
This
is where the processing of sounds starts getting kind of choosy…here’s how:
Actually,
the sound waves that hit the outer ear can either be reflected (scattered) or
conducted.
And
it’s only the conducted sound waves that travel through the ear canal and hits
the eardrum (tympanic membrane). This inward force eventually causes the ear
ossicles to result in pressing of footplate of stapes into the oval window. Ok,
that’s enough of that, let’s get on with the interesting derivatives:
1. The
surface area of the eardrum is 30 times greater than that of the stapes. Oops! Well,
that means the resulting pressure on the oval window is about 30 times greater
than the original pressure on the eardrum…this pressure is needed for the
stapes to be able to transfer energy to the inner ear.
Who
cares, right?
Here’s it: The more focused/conducted
and less scattered the words you hear a.k.a listen to, the greater the pressure
generated in your spiritual hearing faculties.
2. The
ear ossicles are bones- i.e they are specifically suitable for their functions.
This wouldn’t have been possible if they were merely cartilages or muscles, I’m
pretty sure you get my point.
Your words have to be molded,
peculiar to your life. Personalize words…
3. They
(ossicles) are the smallest bones in the body
Your voice doesn’t have to be the
loudest in the world, the right words you hear do not have to be long, bulky (permit
me to call words bulky), dictionary-ous words…they just have to be the right
words. A verse of Scripture daily is enough, actually.
4. They
are located in air-filled spaces
They operate in the right environs
for their activities
5. Conduction
of sound waves is from one thin membrane to another.
Hey, the opposition is not as
strong as you think…
Note: the middle ear is the battle
ground. The human’s middle ear functions in matching the opposition to
conduction of sound waves- using small but effective bones! Choose your own
bones because it’s battle time!
Thanks
for reading.
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