The Ear, Structure and How It Works

By: Ajay Pursram 8F

Introduction

Introduction

This journal aims to explain the structure of the Ear and how it works. The ear is one of your five senses and without an ear you wouldn’t be able to hear. Your ear helps your balance, for example if you bend down to pick up your cat, your ear will help balance you so you don't fall over.
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Structure Of The Ear

This journal will explain the key parts of the ear.

The three main parts in the ear is the outer ear, the inner ear and the middle ear.




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Outer ear - The Outer ear is also called the Pinnal. This is the part of the ear that people can see, the main job of this part of the ear is to collect sounds. The Outer ear also includes something called the ear canal. that’s where wax is produced. The wax is the greasy stuff that protects the canal. The ear wax is gooey but it’s useful in a way as it fights the infections inside and it collects dirt to keep the canal clean. When sound comes in it travels through the auricle and the auditory canal.
Inner ear - The Inner ear is sometimes called the labyrinth because its shape is complicated. It is also the most important part of the ear for hearing. The Cochlea is the spiral part of the inner ear . It contains the organ of corti, which produces nerve impulses in response to sound vibrations. The temporal bone shell of the inner ear is one of the hardest bones in the body.
Middle ear - The middle ear is where your eardrum is, it also stores something called a cavity (also called the tympanic cavity.) The Malleus (or hammer) is a long handle that is attached to the ear drum. The smallest bone in the body is in the middle ear and its called the stapes or (the stirrup)
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How The Ear Hears Things

The sound enters your ear and travels through your ear canal. it then travels to your eardrums in the middle ear. The sound vibrates as it travels and the volume increases, the sound then changes from air to liquid. After that the movement of the hair cells sends electrical signals through the auditory nerve up to the brain.

Conclusion

In this scientific journal I have found out that the ear is a very delicate but complicated part of the body, it is an interesting thing to research and despite what topics we have covered here but there is still a lot to learn. The ear may look simple on the outside but its a whole new world inside.

By: Ajay Pursram 8F