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Middle ear information


Middle ear
A diagram of the anatomy of the human ear:
  Brown is outer ear.
  Red is middle ear.
  Purple is inner ear.
Details
NerveGlossopharyngeal nerve
Identifiers
Latinauris media
MeSHD004432
TA98A15.3.02.001
TA26877
FMA56513
Anatomical terminology
[edit on Wikidata]

The middle ear is the portion of the ear medial to the eardrum, and distal to the oval window of the cochlea (of the inner ear).

The mammalian middle ear contains three ossicles (malleus, incus, and stapes), which transfer the vibrations of the eardrum into waves in the fluid and membranes of the inner ear. The hollow space of the middle ear is also known as the tympanic cavity and is surrounded by the tympanic part of the temporal bone. The auditory tube (also known as the Eustachian tube or the pharyngotympanic tube) joins the tympanic cavity with the nasal cavity (nasopharynx), allowing pressure to equalize between the middle ear and throat.

The primary function of the middle ear is to efficiently transfer acoustic energy from compression waves in air to fluid–membrane waves within the cochlea.

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Middle ear

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middle ear is the portion of the ear medial to the eardrum, and distal to the oval window of the cochlea (of the inner ear). The mammalian middle ear...

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Middle ear barotrauma

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Middle ear barotrauma (MEBT), also known to underwater divers as ear squeeze and reverse ear squeeze, is an injury caused by a difference in pressure between...

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Ear

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parts: the outer ear, the middle ear and the inner ear. The outer ear consists of the pinna and the ear canal. Since the outer ear is the only visible...

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Middle ear implant

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  Middle ear implants work by improving the conduction of sound vibrations from the middle ear to the inner ear. There are two types of middle ear devices:...

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Ear canal

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The ear canal (external acoustic meatus, external auditory meatus, EAM) is a pathway running from the outer ear to the middle ear. The adult human ear canal...

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Cholesteatoma

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expanding growth consisting of keratinizing squamous epithelium in the middle ear and/or mastoid process. Cholesteatomas are not cancerous as the name may...

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Barotrauma

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and decompression events. Barotrauma generally manifests as sinus or middle ear effects, lung overpressure injuries and injuries resulting from external...

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Eustachian tube

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tetrapods, both the middle ear and the ear canal are normally filled with air. Unlike the air of the ear canal, however, the air of the middle ear is not in direct...

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Eardrum

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separates the external ear from the middle ear. Its function is to transmit sound from the air to the ossicles inside the middle ear, and thence to the oval...

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Inner ear

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The inner ear (internal ear, auris interna) is the innermost part of the vertebrate ear. In vertebrates, the inner ear is mainly responsible for sound...

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Hearing

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system: the outer ear, the middle ear, and the inner ear. The outer ear includes the pinna, the visible part of the ear, as well as the ear canal, which terminates...

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Otorhinolaryngology

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diseases Otitis externa – outer ear or ear canal inflammation Middle ear and mastoid diseases Otitis media – middle ear inflammation Perforated eardrum...

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Conductive hearing loss

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waves anywhere along the pathway through the outer ear, tympanic membrane (eardrum), or middle ear (ossicles). If a conductive hearing loss occurs in...

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Ossicles

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The ossicles (also called auditory ossicles) are three bones in either middle ear that are among the smallest bones in the human body. They serve to transmit...

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Otitis

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is a general term for inflammation in ear or ear infection, inner ear infection, middle ear infection of the ear, in both humans and other animals. When...

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Otitis media

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diseases of the middle ear. One of the two main types is acute otitis media (AOM), an infection of rapid onset that usually presents with ear pain. In young...

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Evolution of mammalian auditory ossicles

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process that resulted in the formation of the bones of the mammalian middle ear. These bones, or ossicles, are a defining characteristic of all mammals...

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Acoustic reflex

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(also known as the stapedius reflex, stapedial reflex, auditory reflex, middle-ear-muscle reflex (MEM reflex, MEMR), attenuation reflex, cochleostapedial...

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Outer ear

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The outer ear, external ear, or auris externa is the external part of the ear, which consists of the auricle (also pinna) and the ear canal. It gathers...

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Oral skills

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injury. The middle ear is a cavity that is filled with air. The tympanic membrane separates the middle ear from the external ear. The middle ear is joined...

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Ear clearing

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Ear clearing or clearing the ears or equalization is any of various maneuvers to equalize the pressure in the middle ear with the outside pressure, by...

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Auditory system

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vibrations to the eardrum, increasing the sound pressure in the middle frequency range. The middle-ear ossicles further amplify the vibration pressure roughly...

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Human embryonic development

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third to the eighth week the face and neck develop. The inner ear, middle ear and outer ear have distinct embryological origins. At about 22 days into development...

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Evolution of mammals

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Other important research characteristics include the evolution of the middle ear bones, erect limb posture, a bony secondary palate, fur, hair, and warm-bloodedness...

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Tinnitus

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the middle ear. Spontaneous otoacoustic emissions (SOAEs)—faint high-frequency tones that are produced in the inner ear and can be measured in the ear canal...

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Ear pain

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Ear pain, also known as earache or otalgia, is pain in the ear. Primary ear pain is pain that originates from the ear. Secondary ear pain is a type of...

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Stapedius muscle

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stabilize the smallest bone in the body, the stapes or stirrup bone of the middle ear. The stapedius emerges from a pinpoint foramen or opening in the apex...

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Tympanostomy tube

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myringotomy to keep the middle ear aerated for a prolonged period of time, typically to prevent accumulation of fluid in the middle ear. The tube itself is...

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Audiology

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where the lesion causing the hearing loss is found (outer ear, middle ear, inner ear, auditory nerve and/or central nervous system). If an audiologist...

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Rabbit

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detecting predators due to the way the outer, middle, and inner ear muscles coordinate with one another. The ear muscles also aid in maintaining balance and...

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