middle ear


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Related to middle ear: outer ear, inner ear, Middle ear infection

middle ear

The middle of the three parts of the ear, consisting of an air-filled cavity bound externally by the tympanic membrane and containing three ossicles that vibrate in response to sound waves, passing the amplified sound to the inner ear at the round window.

tym·pan·ic cav·i·ty

(tim-pan'ik kav'i-tē) [TA]
An air chamber in the temporal bone containing the ossicles; it is lined with mucous membrane and is continuous with the auditory tube anteriorly and the tympanic antrum and mastoid air cells posteriorly.

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] .

middle ear

The narrow cleft within the temporal bone lying between the inside of the ear drum and the outer wall of the inner ear. The middle ear is lined with mucous membrane, contains the chain of three auditory OSSICLES and is drained into the back of the nose by the EUSTACHIAN TUBE. It is a common site of infection, which gains access by way of the tube. Middle ear infection is called OTITIS MEDIA. Also known as the tympanic cavity.

middle ear

see EAR.

Middle ear

The cavity or space between the eardrum and the inner ear. It includes the eardrum, the three little bones (hammer, anvil, and stirrup) that transmit sound to the inner ear, and the eustachian tube, which connects the inner ear to the nasopharynx (the back of the nose).

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.
References in periodicals archive ?
A middle ear implant is a more recent hearing implant, offering an alternative to conventional hearing aids.
After septoplasty, the middle ear pressure was -21.18[+ or -]30.72 daPa in Group 1 and -24.96[+ or -]41.74 daPa in Group 2.
The culprit here is the Eustachian tube, a narrow passage between the middle ear and the rear of the nose, near the soft palate.
Long-term follow-up is integral in all patients with inverted papilloma of the middle ear and mastoid cavity because of the possibility of recurrence and the high rate of malignant transformation [7].
Patients for whom treatment was not effective or led to recurrence were given middle ear tympanoplasty and TT placement, followed by dexamethasone rinsing of the tympanic cavity via the TT.
Severe hearing loss, facial nerve weakness, and vestibular dysfunction are advanced sequel of middle ear pathology that should raise red flags for a more sinister cause.
Structures of middle ear like chorda tympani nerve, handle of malleus, opening of Eustachian tube, Promontory, Pyramids with tendon of stapedius muscle, facial recess, sinus tympani, ponticulus subiculum and round window were examined.
Swelling, inflammation and mucus in the Eustachian taubes from an upper respiratory infection or allergy can block them, causing the accumulation of fluids in the middle ear. A bacterial or viral infection of this fluid is usually what produces the symptoms of an ear infection.
The pre-operative CT scans were reported to assess characteristic cholesteatoma findings, location and extension of soft tissues in middle ear, integrity of scutum, erosion of the ossicular chain, integrity of the thin bony septum of facial nerve canal, the semicircular canals and the tegmenextension of cholesteatoma outside the middle ear, integrity of mastoid air cells, trabeculae, as well as relationship and proximity of soft tissues with the tympanic membrane were assessed.
In the presence of an intact middle ear system, we support the notion that the degree of hearing loss is affected only by the size of the TM perforation (more hearing loss with bigger perforation size) and middle ear volume (more hearing loss with smaller middle ear volume).
Middle ear infections (acute otitis media or AOM) are bacterial, not viral.
Infections of the ear can be either external ear infections or middle ear infections.