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Ear

The ear is an organ of the body that is used for hearing and balance. It is connected to the brain by the auditory nerve and is composed of three divisions, the external ear, the middle ear, and the inner ear. The greater part of which is enclosed within the temporal bone.

The ear is looked upon as a miniature receiver, amplifier and signal-processing system. The structure of the outer ear catching sound waves as they move into the external auditory canal. The sound waves then hit the eardrum and the pressure of the air causes the drum to vibrate back and forth. When the eardrum vibrates its neighbour the malleus then vibrates too. The vibrations are then transmitted from the malleus to the incus and then to the stapes. Together the three bones increase the pressure which in turn pushes the membrane of the oval window in and out. This movement sets up fluid pressure waves in the perilymph of the cochlea. The bulging of the oval window then pushes on the perilymph of the scala vestibuli. From here the pressure waves are transmitted from the scala vestibuli to the scala tympani and then eventually finds its way to the round window. This causes the round window to bulge outward into the middle ear. The scala vestibuli

Some topics in this essay:
Ear Labyrinth-, Equilibrium Equilibrium, Middle Ear, , Outer Ear, middle ear, hair cells, oval window, semicircular canals, sound waves, scala vestibuli, round window, supporting cells, bony labyrinth, outer ear, cochlear duct scala, cells supporting cells, sound waves hit, semicircular canals vestibule, hair cells supporting,

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Approximate Word count = 1464
Approximate Pages = 6 (250 words per page double spaced)

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