The ear is the organ of hearing and balance. The parts of the ear consist of:
External or external ear, including:
Pinna or auricle. This is the outdoors part of the ear.
External acoustic canal or tube. This is television that links the external ear to the within or middle ear.
Tympanic membrane (eardrum). The tympanic membrane divides the external ear from the middle ear.
Middle ear (tympanic cavity), including:
Ossicles. 3 little bones that are linked and send the acoustic waves to the inner ear. The bones are called:
Malleus
Incus
Stapes
Eustachian tube. A canal that connects the middle ear with the back of the nose. The eustachian tube assists to adjust the pressure in the center ear. Matched pressure is required for the appropriate transfer of acoustic waves. The eustachian tube is lined with mucous, similar to the within the nose and throat.
Inner ear, including:
Cochlea. This includes the nerves for hearing.
Vestibule. This includes receptors for balance.
Semicircular canals. This consists of receptors for balance.
How do you hear?
Hearing begins with the external ear. When a noise is made outside the external ear, the acoustic waves, or vibrations, take a trip down the external acoustic canal and strike the eardrum (tympanic membrane). The eardrum vibrates. The vibrations are then passed to 3 small bones in the center ear called the ossicles. The ossicles enhance the noise. They send out the acoustic waves to the inner ear and into the fluid-filled hearing organ (cochlea).
As soon as the acoustic waves reach the inner ear, they are transformed into electrical impulses. The acoustic nerve sends out these impulses to the brain. The brain then equates these electrical impulses as noise.
Associated Topics
Neurological Exam for Children
Several Sclerosis (MS)
Related Services
Audiology
Ear, Nose & Throat
Hearing Center
Otitis Media (Middle Ear Infection) Ear Tube Insertion for ChildrenOssicular Chain Dislocation.
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