middle ear


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

middle ear

the sound-conducting part of the ear, containing the malleus, incus, and stapes

Middle Ear

 

in man and other terrestrial vertebrates, the part of the auditory system located between the external ear and the internal ear. The middle ear includes the air-filled tympanic cavity, which contains auditory ossicles and the auditory, or eusta-chian, tube. In man and some primates, it also includes mastoid cells. In most vertebrates, it is bounded on the outside by the tympanic membrane. The middle ear is separated from the internal ear by the cartilaginous or bony wall of the vestibule of the labyrinth. The auditory ossicles transmit sound vibrations from the tympanic membrane to the internal ear. In most animals, the middle ear is connected to the pharynx by the auditory tube. In many terrestrial vertebrates and especially in mammals it contains many additional structures that perform important acoustic functions. The middle ear is partly or completely reduced in many terrestrial and secondarily aquatic amphibians, in many mammals, and in some turtles and snakes.

middle ear

[′mid·əl ′ir]
(anatomy)
The middle portion of the ear in higher vertebrates; in mammals it contains three ossicles and is separated from the external ear by the tympanic membrane and from the inner ear by the oval and round windows.
References in periodicals archive ?
Very rarely, perforation of the eardrum is caused by a tumour of the middle ear.
The act of blowing up the balloon helps to open up the Eustachian tube, making it easier for fluid to drain from the middle ear.
To the best of our knowledge, this is the first reported case of such a presentation without an associated cholesteatoma, and it illustrates the importance of an accurate clinical assessment in the management of middle ear pathology.
If their hearing loss is not severe enough to warrant consideration for a cochlear implant then another option is a middle ear implant.
The vast majority of patients receiving tubes have middle ear effusion at the time of surgery which significantly increases their risk of post-operative complications including otorrhea (drainage) and tube occlusion.
Middle Ear infections: After having a runny nose for a few days, your child complaints of ear pain, here is what has happened: The tube connecting the ear with the nose and throat is blocked from the excessive secretions.
Research in mouse embryos finds that the middle ear begins as a pouch of tissue that then ruptures at one end.
Sometimes the tube gets blocked and doesn't let air into the middle ear properly which can cause a number of problems.
Examination under microscope revealed a mass in middle ear, which was bleeding on touch.
The researchers measured the taste thresholds of 42 children with COME who underwent insertion of a small plastic tube into the eardrum to keep the middle ear aerated, and a control group of 42 children without OME.
In a middle ear infection, inflammation can result in swelling of mucous membranes and an excessive production of fluid.
The sensor senses vibrations from the eardrum and middle ear bones and converts these mechanical vibrations into electrical signals, which are then sent to the sound processor, which amplifies and filters the signal to compensate for the individual patient's hearing loss.