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The Function of the Ear

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by

Claire Manning

on 8 August 2013

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Transcript of The Function of the Ear

Presented and Written By: Claire Manning
The Ear Drum
A taught piece of skin in between your ear canal and the middle ear
It is very sensitive even to the slightest vibrations.
The eardrum serves as a gatherer of the information
The Hammer
One of the three smallest bones in your body- all of which are in your ear
Vibrations are collected and move the hammer which moves the anvil
This complex system is whats behind your ear. It may look confusing but fairly easy to understand.
The Anvil
The Anvil is the second of the three bones in your ear
These three bones in your ear look resemble the item pictured on each slide
The Anvil
The Hammer
The Stirrup
As you can guess as the Anvil moves from the Hammer it hits the Stirrup, and causes it to move
Is the smallest bone in the body.
The Stirrup pushes against the Cochlea and sends the sound there
The Stirrup
The Cochlea
Spiral shaped part of the ear, like a snail
It is filled with liquid and is covered in tiny microscopic hairs
Vibrations that have carried throughout the Ossicles move the hairs and liquid
This movement of these very sensitive hairs is the beginning to the Auditory Nerve
Ossicles
The Auditory Nerve
The Auditory nerve begins in the Cochlea
Tiny hairs inside the nerve sense as the liquid in the Cochlea moves
Then this information is taken to the brain to be interpreted
The Semi-Circular Canals
The three semi-circular canals in your ear control your balance.
Each of the different canals controls a different motion
Try spinning for quite a while- you will feel dizzy because the liquid in your ears continues to spin even once you have stopped
They look a lot like this sign from The Big Bang Theory
Hearing Range
The human ear can hear for quite a large range from 20 Hertz up to 20,000 hertz.
Most conversations you will have with people will be between 200 and 8,000 Hertz.
Usually by the time you are a teenager you have lost the ability to hear at 20,000 Hertz.
Pinna
Is the cartilage outside of the ear that we usually think of as the ear
It directs the sound waves into the ear
The bigger the ears usually mean the better you can hear
Ear Wax
Ear Wax is not actually a part connected to the ear but does have a major function
It protects items from going into the ear
Made in the Ear Canal.
Video on the Ear
If you have missed anything thing this video will clear it all up.
THE EAR
Ear Canal
Part of the Outer Ear
Tunnel where the sound first enters and is led to the Ear Drum
The Ear Wax in the ear acts like a shield for the Ear Drum
Full transcript