Скачать или смотреть How we hear sound ||ear anatomy and function || 3d animation

How the ears work ||Journey of Sound to the Brain||3d animation

The outer ear is called 'pinna'. It collects the sound from the surroundings. The collected sound passes through the auditory canal. At the end of the auditory canal there is a thin membrane called the ear drum or tympanic membrane.

When a compression of the medium reaches the eardrum the pressure on the outside of the membrane increases and forces the eardrum inward.
Similarly, the eardrum moves outward when a rarefaction reaches it. In this way the eardrum vibrates.

The vibrations are amplified several times by three bones (the hammer, anvil and stirrup) in the middle ear.
The middle ear transmits the amplified pressure variations received from the sound wave to the inner ear.

In the inner ear, the pressure variations are turned into electrical signals by the cochlea. These electrical signals are sent to the brain via the auditory nerve, and the brain interprets them as sound.

The Function of The Human Ear

The main function of the ear is to help in hearing. In our brain, the temporal lobe senses the sound. Pinna directs the sound wave toward the eardrum through the auditory canal and the eardrum amplifies it. Vestibulocochlear nerve sends the sound wave stimulus to the temporal lobe and then we are able to hear the sound.

The ear also helps in balancing the body. The human ear allows us to feel the effect of gravity that is known as stationary balance and it also helps to feel the acceleration that is known as dynamic balance.
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