It is called the stapes, and it is part of the ear.
Examplesofstapes
stapes
Mandible, maxilla and auditory ossicles (malleus, incus andstapes) are branchial arch derivatives.
From theCambridge English Corpus
The learning curve instapessurgery.
From theCambridge English Corpus
Coleman has taken a step along this road by her pattern of "stapes"and"fringes".
From the
Hansard archive
Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0
When thestapespresses on the oval window, it causes the perilymph, the liquid of the inner ear to move.
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The structure is known as the middle ear, and is made up of thestapes, incus, malleus, and tympanic membrane.
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The biggest bone in the body is the femur in the upper leg, and the smallest is thestapesbone in the middle ear.
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In mammals, the splanchnocranium derives the bones of the middle ear, the malleus, the incus andstapes.
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However, in early amphibians thestapeswas too large, making the footplate area oversized, preventing the hearing of high frequencies.
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It also has no tympanic annulus andstapes, making it probably extremely hard of hearing.
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It passes through the ring of thestapesand divides into supraorbital, infraorbital, and mandibular branches which follow the three divisions of the trigeminal nerve.
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This consists of two ossicles: the columella (equivalent to thestapesof higher vertebrates) which is fused to the skull, and the operculum.
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The procedure creates a tiny opening in thestapes(the smallest bone in the human body) in which to secure a prosthetic.
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The second is a congenital malformation of thestapes.
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Instead, these thickstapesmay have functioned to support the tissue that covers the otic notch.
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The ability of the tympanum andstapesto effectively transmit vibrations is called impedance matching.
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