auris

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ear

 [ēr]
the organ of hearing and equilibrium. (See Plates.) It is made up of the outer (external) ear, the middle ear, and the inner (internal) ear.

The outer ear consists of the auricle or pinna and the external acoustic meatus. The auricle collects sound waves and directs them to the external acoustic meatus; from there the waves travel through the external auditory canal to the eardrum (tympanic membrane).

The middle ear is separated from the outer ear by the eardrum. It contains the three ossicles, the malleus (hammer), incus (anvil), and stapes (stirrup), so called because of their resemblance to these objects. These three small bones form a chain across the middle ear from the eardrum to the oval window. The stapes causes a membrane in the oval window to vibrate, and the vibrations are transmitted to the inner ear. The middle ear is connected to the nasopharynx by the eustachian tube, through which the air pressure in the middle ear is equalized with the air pressure in the nose and throat. The middle ear is also connected with the cells in the mastoid bone just behind the outer ear. Two muscles attached to the ossicles contract when loud noises strike the tympanic membrane, limiting its vibration and thus protecting it and the inner ear from damage.

The inner ear (or labyrinth) contains the cochlea, as well as the nerves that transmit sound to the brain. It also contains the semicircular canals, which are essential to the sense of equilibrium.

When a sound strikes the ear it causes the tympanic membrane to vibrate. The ossicles function as levers, amplifying the motion of the tympanic membrane, and passing the vibrations on to the cochlea. From there the vestibulocochlear (eighth cranial) nerve transmits the vibrations, translated into nerve impulses, to the auditory center in the brain.
Diseases of the Ear. Infections and inflammations of the ear include otomycosis, a fungal infection of the outer ear; otitis media, infection of the middle ear; and mastoiditis, an infection of the mastoid cells. deafness may result from infection or from other causes such as old age, injury to the ear, hereditary factors, or conditions such as otosclerosis. Disorders of equilibrium may be caused by imperfect functioning of the semicircular canals or from labyrinthitis, an inflammation of the inner ear. Menière's disease, believed to result from dilatation of the lymphatic channels in the cochlea, may also cause disturbances in balance.
Surgery of the Ear. Surgical procedures on the ear usually are indicated for chronic infection or hearing loss. An exception is myringotomy, incision of the tympanic membrane, which is sometimes necessary to relieve pressure behind the eardrum and allow for drainage from an inflammatory process in the middle ear. Surgical procedures involving plastic reconstruction of the small bones of the middle ear are extremely delicate and have been made possible by the development of special instruments and technical equipment. stapedectomy and tympanoplasty are examples of this type of surgery, which has done much to preserve hearing that would otherwise be lost as a result of infectious destruction or sclerosis. Inner ear implants are now being performed to improve hearing in patients who have severe sensorineural hearing loss. Other surgical techniques for sensorineural hearing loss are in the developmental stage.
Patient Care. Care following surgery of the ear is aimed at preventing infection and promoting the comfort of the patient. Since the ear is so close to the brain, it is extremely important to avoid introducing pathogenic organisms into the operative site. The external ear and surrounding skin must be kept scrupulously clean. If the patient's hair is long it should be braided or arranged so that it does not come in contact with the patient's ear and side of the face. Aseptic technique must be used in all procedures carried out immediately before and after surgery.ƒ

The patient should be instructed to avoid nose blowing, especially after surgery, when there is a possibility that such an action can alter pressure within the ear. Observation of the patient after surgery of the ear includes assessing function of the facial nerve; evidence of dysfunction could include inability to wrinkle the forehead, close the eyes, pucker the lips, or bare the teeth. Any sign of facial nerve damage should be reported to the surgeon. vertigo is another common occurrence after surgery of the ear; it is usually only temporary and will subside as the operative site heals. The patient with vertigo requires special protective measures such as side rails and support when out of bed, so as to avoid falls or other accidental injuries.

Most surgeons prefer that the dressings around the ear not be changed during the immediate postoperative period. Should excessive drainage require more dressings, these can be applied over the basic dressing. Any drainage should be noted and recorded, with excessive drainage reported immediately to the surgeon. (See also care of the patient with hearing loss.)
Anatomical features of the external ear. From Ignatavicius and Workman, 2002.
Structures of the middle ear.
beach ear otitis externa caused by irritation from ocean water and other beach conditions.
cauliflower ear a thickened and deformed ear caused by accumulation of fluid and blood clots in the tissue after repeated injury; it is most often seen in boxers, for whom it is almost an occupational hazard. The ear will not recover its normal shape but can be restored to normal by plastic surgery.
swimmer's ear (tank ear) otitis externa.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ear

(ēr), [TA]
The organ of hearing and equilibrium, composed of the external ear, consisting of the auricle, external acoustic meatus, and tympanic membrane; the middle ear, or tympanic cavity, with its auditory ossicles and associated muscles; and the internal ear, vestibulocochlear organ, which includes the bony labyrinth (of semicircular canals, vestibule, and cochlea), vestibular and cochlear labyrinths.
See also: auricle.
Synonym(s): auris [TA]
[A.S. eáre]
Farlex Partner Medical Dictionary © Farlex 2012

EAR

Abbreviation for estimated average requirement.

ear

(ēr) [TA]
The organ of hearing: composed of the external ear, which includes the auricle and the external acoustic, or auditory, meatus; the middle ear, or the tympanic cavity with its ossicles; and the internal ear or inner ear, or labyrinth, which includes the semicircular canals, vestibule, and cochlea.
See also: auricle
Synonym(s): auris [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

EAR

Abbreviation for estimated average requirement.

ear

(ēr) [TA]
Organ of hearing and equilibrium, composed of external ear,, consisting of auricle, external acoustic meatus, and tympanic membrane; middle ear,, or tympanic cavity, with its auditory ossicles and associated muscles; and internal ear,, the vestibulocochlear organ, which includes the bony labyrinth (of semicircular canals, vestibule, and cochlea), and vestibular and cochlear labyrinths.
Synonym(s): auris.
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about auris

Q. Tinnitus (Ringing and Other Ear Noise) Anybody have this problem? Urrrrrrrrrrr, I think I want to shoot myself,you know what I mean. It is worst than the chinese torture. Someone, please send me a good tip how to stop it. I have this for 4 yrs and it is driving me crazy. You cannot enjoy total complete silence. They say silence is golden but not when you have this ringgi in your ears. It gets worst when there is no noise. The only remedy I have is eating hot spicy curry, it helps for 2-3 wks and then it comes back again and then eating spicy food again. Listening to classical music helps to. Oh well.....just have to suck it up.

A. I've read that lipoflavinoids can help.

Q. What causes high pitch ringing in one ear?

A. I never knew that about Iron. Thank you F3_4u

Q. my ears do not hear well especially when it's cold. i hear my breath and heart beat. what's my prolem? Denis when i breathe it feels like the breath goes through the ear when the weather is cold or when i do some excercise like jogging

A. for ear infections or blocked ear tube - try out the eardoc www.eardoc.info

More discussions about auris
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References in periodicals archive ?
L'embargo des Aures s'est fissure et la France a compris que la revolution concernait toute l'Algerie[beaucoup plus grand que], a-t-il assene.
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Brisbane, Australia, Nov 20, 2009 - (ABN Newswire) - Bandanna Energy Limited (ASX:BND) is pleased to announce the appointment of Mr Park Soon IL as a director of Bandanna on 19 November 2009, following the 10% share placement to SAMTAN Aures Pty Ltd, a wholly owned subsidiary of SAMTAN Co., Ltd.Mr Park Soon IL is the Senior Managing Director of SAMTAN's Energy & Resources Development Division.
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In one of the bloodiest massacres to date, in early January 2003, suspected militants killed more than 40 soldiers and local militiamen near the town of Batna, in the remote Aures mountains.