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	X. The Organs of the Senses and the Common Integument. 1d. 2. The Middle Ear or Tympanic Cavity. Gray, Henry. 1918. ...
		The middle ear or tympanic cavity is an irregular, laterally compressed space within the temporal bone.
		The tympanic cavity is bounded laterally by the tympanic membrane; medially, by the lateral wall of the internal ear; it communicates, behind, with the tympanic antrum and through it with the mastoid air cells, and in front with the auditory tube (Fig.
		It is placed at the bottom of a funnel-shaped depression and, in the macerated bone, leads into the cochlea of the internal ear; in the fresh state it is closed by a membrane, the secondary tympanic membrane, which is concave toward the tympanic cavity, convex toward the cochlea.
	www.bartleby.com /107/230.html (2118 words)

	Middle Ear Infections
		Typically, when the doctor refers to an ear infection, he or she is most likely talking about "acute otitis media" (although there's also the common ear infection called swimmer's ear, or otitis externa).
		Ear infections also occur more commonly in boys than girls, in children whose families have a history of ear infections, and more often in the winter season when upper respiratory tract infections or colds are most frequent.
		Ear infections are also frequently associated with upper respiratory tract infections and, therefore, with their common signs and symptoms, such as a runny or stuffy nose or a cough.
	kidshealth.org /parent/infections/ear/otitis_media.html (1859 words)

	Acute Middle Ear Infection
		Acute middle ear infection is an inflammation and/or infection of the middle ear.
		It is caused by a bacterial or viral infection of the fluid of the middle ear.
		Ear infections are often associated with respiratory infections or with blocked sinuses caused by allergies or enlarged adenoids.
	www.mamashealth.com /ear (262 words)

	HEARING AND BALANCE
		The middle ear is a crucial component in the transmission of sound from the external world to the inner ear.
		The middle ear acts as a kind of hydraulic press in which the effective area of the eardrum is about 21 times that of the stapes footplate.
		We say that the middle ear matches the acoustic impedance between the air and the fluid, thus maximizing the flow of energy from the air to the fluid of the inner ear.
	www.neurophys.wisc.edu /~ychen/textbook/mid_ear.html (2969 words)

	Inflammation of the middle ear (otitis media)
		Inflammation of the middle ear is an infection caused by a germ (bacterium).
		The middle ear is an air-filled hollow between the eardrum and the inner ear.
		The common name for a build-up of fluid in the middle ear that is not due to an infection is called glue ear.
	www.netdoctor.co.uk /diseases/facts/inflammationofthemiddleear.htm (745 words)

	Prevention of Middle Ear Barotrauma
		Ear Fear is a term I have coined to describe the apprehension associated with middle ear equalization.
		To some, this sensation of pressure in the middle ears and the crackling in one's head associated with the popping open of a Eustachian tube is uncomfortable.
		"Ear Fear" must always be considered as a possible complicating factor and an instructor must be sensitive to the issues surrounding the reluctance of a diver to fully and aggressively pressurize the middle ears.
	faculty.washington.edu /ekay/MEbaro.html (2973 words)

	Pediatric Advisor 2006.2: Middle Ear Fluid
		Fluid is normally produced in the middle ear (the space behind the eardrum) in small amounts.
		After an ear infection, the eustachian tube may be temporarily blocked and fluid will build up in the middle ear space instead of draining out normally.
		Middle ear fluid interferes with the ability to hear in a crowd or classroom.
	www.med.umich.edu /1libr/pa/pa_earfluid_hhg.htm (805 words)

	Howstuffworks "Middle Ear Infection: A Profile of a Common Affliction"
		Middle ear infections develop when viruses or bacteria in the nose or throat travel to the ear through the eustachian tube, which connects the middle ear to the nose and throat.
		Middle ear infections can be recognized by severe throbbing pain in the ear, fever as high as 105 degrees Fahrenheit (102 degrees Fahrenheit in adults), hearing loss, and dizziness, nausea, vomiting, or sore throat.
		Ear infections are diagnosed by an inspection of the eardrum.
	health.howstuffworks.com /define-middle-ear-infection.htm (554 words)

	Associates in Otolaryngology - Head & Neck Surgery:Middle Ear Infections
		Middle ear infections occur behind the eardrum (the thin sheet of tissue that passes sound waves between the outer and middle ear).
		Middle ear infections are most common in young children, whose ear anatomy is not yet fully developed.
		Middle ear infections can be painful and they tend to disrupt sleep- for you as well as for your child.
	www.entdr.com /middle_ear.html (1624 words)

	Middle Ear Infections: Ear, Nose, and Throat Disorders: Merck Manual Home Edition
		Middle ear infections are extremely common between the ages of 3 months and 3 years and often accompany the common cold.
		Exposure to cigarette smoke further increases the risk for middle ear infections, as does the use of a pacifier, both of which may impair the function of the eustachian tube and affect middle ear ventilation.
		Infants with acute middle ear infections have fever, crying or irritability that sometimes cannot be explained, and disturbances in sleep.
	www.merck.com /mmhe/au/sec23/ch276/ch276b.html (987 words)

	What Is Middle Ear Infection?
		Middle ear infection is an infection that occurs behind the eardrum, in the middle part of the ear.
		Middle ear infection is the most common childhood illness treated by pediatricians.
		The ear is divided into 3 parts: the outer ear, the middle ear, and the inner ear.
	www.ehealthmd.com /library/middleear/MEI_whatis.html (650 words)

	The Soundry: The Middle Ear
		The incus transfers the vibrations of the malleus to the stapes, and is the second bone in the chain to transfer vibrations from the eardrum to the inner ear.
		It is connected to the cavity of the middle ear, and at the bottom opens into the nasopharynx (located in the back of the mouth).
		In order to equalize the pressure in the middle ear with the pressure of the outside air, the eustachian tube opens to allow air to flow in or out of the tube about every three times we swallow, chew, or yawn.
	library.thinkquest.org /19537/Ear4.html (265 words)

	Middle Ear Fluid in Young Children
		The middle ear is the space, usually filled with air, behind the eardrum.
		The most common complaint of parents whose child has middle ear fluid is that the child turns the sound up too loud or sits too close to the television set.
		Middle ear fluid does not go away in about 40 percent of children in 3 months and in about 15 percent in 6 months.
	www.kidsource.com /kidsource/content/mef.html (2542 words)

	Middle Ear Infections
		Middle ear infections (otitis media) lie behind the eardrum and are typically caused by viruses or bacteria related colds or allergies.
		This swelling blocks the drainage from the ear and causes a buildup of pressure from both fluid and air that are trapped in the middle ear.
		The fluid that is trapped in the middle ear will become thicker, which reduces its volume and relieves the pressure.
	www.alexanderent.net /middle-ear-infection.htm (610 words)

	CNN.com - Middle ear implants not your grandpa's hearing aid - August 21, 2002
		"Middle ear implants are a category of devices that are still fairly new and are used with a subgroup of people who have tried hearing aids and are dissatisfied," says Jaclyn Spitzer, professor of clinical audiology and speech pathology at Columbia Presbyterian Medical Center in New York.
		In general, middle ear implants are attached to the middle ear bones to enhance their vibration.
		Middle Ear Transducer (MET) Ossicular Stimulator (Made by Otologics): The MET Ossicular Stimulator is in testing.
	archives.cnn.com /2002/HEALTH/conditions/08/21/middle.ear.implants/index.html (672 words)

	Middle & Inner Ear Infections in Dogs
		The symptoms for middle and inner ear infections are often similar to outer ear infections and include pain in the ear, head shaking, infected or bloody discharge, and scratching or pawing at the head or ear.
		As the infection in the middle ear progresses, the dog may also have facial paralysis on the infected side due to the inflammation of the facial nerve that runs adjacent to the middle ear.
		Middle and inner ear infections are diagnosed with a thorough otoscopic exam and x-rays of the head.
	www.peteducation.com /article.cfm?cls=2&cat=1591&articleid=1592 (595 words)

	Ear Surgery Information Center-serous Otitis Media
		Identification of fluid in the middle ear is important, not only to prevent future speech problems, but to avoid permanent damage to the eardrum and the middle ear.
		If the opposite ear has persistent infections and fluid problems, it may be advisable to deter the repair of the perforated eardrum until the opposite ear clears fluid and appears to have matured its Eustachian tube function.
		Examination must be performed by the ear, nose and throat specialist to ascertain that a growth is not compressing the Eustachian tube.
	www.earsurgery.org /serous.html (3708 words)

	Middle Ear Infections and Ear Tube Surgery
		We all have a small passage leading from the middle ear to the back of the nose called the eustachian tube, which equalizes the air pressure between the middle ear and the outside world.
		(When your ears pop while yawning or swallowing, your eustachian tubes are adjusting the air pressure in your middle ears.) Bacteria or viruses can enter the middle ear through the eustachian tube and cause an infection — this often occurs when a child has had a cold or other respiratory infection.
		But if your child's ear infections recur frequently and do not resolve easily, or if your child has a hearing loss or speech delay, the doctor may suggest surgery to drain fluid from the middle ear and insert a ventilation tube.
	www.kidshealth.org /parent/medical/ears/ear_infections.html (1138 words)

	MedlinePlus Medical Encyclopedia: Otitis media - chronic
		A chronic ear infection may be the result of an acute ear infection that does not clear completely, or the result of recurrent ear infections.
		The infection may spread into the mastoid bone behind the ear (mastoiditis), or pressure from fluid build-up may rupture the eardrum or damage the bones of the middle ear.
		Ear infections are more common in children because their eustachian tubes are shorter, narrower, and more horizontal than in adults.
	www.nlm.nih.gov /medlineplus/ency/article/000619.htm (846 words)

	Medinfo: Middle ear infection (Otitis media)
		Middle ear infection (otitis media) is an infection of the part of the ear inside the ear drum.
		It causes ear pain and fever, is most common in children, and often follows a cold.
		Sometimes the ear drum may burst causing a discharge of fluid from the ear.
	www.medinfo.co.uk /conditions/otitismedia.html (641 words)

	Middle Ear Infection -- eCureMe.com
		It is connected to an external canal, which is then separated from the structures of the middle ear by a thin drum-like membrane called the eardrum (tympanic membrane).
		The middle ear is filled with air and is connected to the back of the nose by a tube-like canal called the eustachian tube.
		The other parts beyond the middle ear are the inner ear (cochlea, semicircular canal) and the auditory nerves (carries messages to the brain).
	www.ecureme.com /emyhealth/Pediatrics/Middle_Ear_Infection.asp (1085 words)

	Middle Ear Infection - Otitis Media
		Ear infections usually start with a cold, which can cause fluid to build up behind the eardrum.
		The ear is the organ of hearing and one of the most important part of the body.
		The real cause of middle ear infection is, however, the outcome of previous medical treatment of childhood fevers or due to operations for the removal of tonsils or adenoids.
	www.best-home-remedies.com /ear_problems/middle_ear_infection.htm (498 words)

	Middle ear infections - Better Health Channel. (Site not responding. Last check: )
		Middle ear infection (called otitis media) is an infection behind the eardrum.
		By the age of six, most children have grown out of middle ear infections and are not likely to suffer long-term problems.
		Middle ear infections are usually caused by a viral or bacterial infection and often happen during or after a child has a cold.
	www.betterhealth.vic.gov.au /bhcv2/bhcarticles.nsf/pages/Middle_ear_infections?OpenDocument (554 words)

	Ear Infections and Earache
		The middle ear is a pea sized, air-filled cavity separated from the outer ear by the paper-thin eardrum.
		Air enters the middle ear through the narrow eustachian tube that connects the back of the nose to the ear.
		Blockage of the eustachian tube during a cold, allergy, or upper respiratory infection and the presence of bacteria or viruses lead to the accumulation of fluid (a build-up of pus and mucus) behind the eardrum.
	www.entnet.org /healthinfo/ears/earache.cfm (1007 words)

	Ear Infection, Middle \| AHealthyMe.com
		A middle ear infection is simply an invasion of viruses or bacteria into the small space that lies just beyond the eardrum.
		The germs usually stage the assault while a child is recovering from a cold or flu, ailments that leave her ears partly clogged with fluids and create an ideal habitat for microbes.
		Middle ear infections strike 80 percent of all children before their fourth birthday, and they send more young kids to the doctor's office than any other illness.
	www.ahealthyme.com /topic/topic13602 (1404 words)

	Middle Ear Fluid (Site not responding. Last check: )
		Serous otitis media is the medical term for "fluid in the middle ear." Its symptoms are primarily hearing loss-with pressure or pain-are frequently experienced by children and adults alike, and typically follow an upper respiratory infection.
		This narrow canal connects the middle ear to the back of the nose and permits air to enter the middle ear cavity, allowing the hearing mechanism to function properly.
		If hearing loss or fluid in the middle ear persist, an operation called a myringotomy with tube insertion may be recommended in order to remove middle ear fluid (photograph taken from the ENT Journal).
	home.earthlink.net /~jodette/fluid.html (280 words)

	Middle ear definition - Medical Dictionary definitions of popular medical terms easily defined on MedTerms
		The middle ear consists of the ear drum (the tympanum or tympanic membrane) and, beyond it, a cavity.
		The Eustachian tube permits the gas pressure in the middle ear cavity to adjust to external air pressure (so, as you're descending in a plane, it's the Eustachian tube that opens when your ears "open").
		In terms of function, the middle ear communicates with the pharynx, equilibrates with external pressure and transmits the ear drum vibrations to the inner ear.
	www.medterms.com /script/main/art.asp?articlekey=7867 (272 words)

	eMedicine - Middle Ear, Cholesteatoma : Article by Peter S Roland
		Absence of hearing in the contralateral ear is a relative contraindication to surgery.
		Long-term balance disturbance may occur as a consequence of labyrinthine or middle ear injury, but it is uncommon, occurring in fewer than 1% of cases.
		Surprisingly, the middle ear is relatively free of disease.
	www.emedicine.com /ent/topic220.htm (6365 words)

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