Unusual Orchestra

That epithet can be characterized by our organ of hearing - a perfect sound-conducting system, which came up with the very nature of

However, all in order. Did you know, for example, that each of us has at the two ears, and the whole ... six (three on each side)?

The outer ear is according to its name - from the outside and consists of skin and cartilage. By the outer ear and ear canal is, which is used to gather earwax.

Between the outer and middle ear, which is a small cavity filled with air, it is the eardrum. She, in turn, by vibrations of the air, that is, the sound moves and transmits sound vibrations within three smallest bones in the body - the hammer, anvil and stirrup.

Middle ear cavity communicates through a channel called auditory or Eustachian tube with the nasal cavity.

Pipe the need to equalize the pressure between the cavities and to give the outflow of the liquid, which allocates the middle ear mucosa. The inner ear is also a small cavity, but filled with a liquid. Here are located the organs of perception - the labyrinth and the cochlea, which process fluid vibrations into electrical signals. As the nerve fibers are sent to the brain where they are processed and interpreted.

Driving hearing 1 - pinna; 2 - the external auditory canal; 3 - hammer; 4 - anvil; 5 - in the stirrup oval window; 6 - the semicircular canals; 7 - a snail; 8 - vestibular branch of the vestibulocochlear nerve; 9 - cochlear branch of the vestibulocochlear nerve; 10 auditory (Eustachian tube); 11 - the eardrum.

Source

Industry News

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