Dictionary Definition
stapes n : the stirrup-shaped ossicle that
transmits sound from the incus to the cochlea [syn: stirrup] [also: stapedes (pl)]
User Contributed Dictionary
Synonyms
Derived terms
Extensive Definition
The stapes or stirrup is the stirrup-shaped small
bone or ossicle in the middle ear
which attaches the incus
to the fenestra
ovalis, the "oval window" which is adjacent to the vestibule
of the inner ear. It is the
smallest and lightest bone in the human
body.
The stapes transmits the sound vibrations from
the incus to the membrane
of the inner ear inside the fenestra
ovalis. The stapes is also stabilized by the stapedius muscle, which is
innervated by the facial
nerve.
In non-mammalian vertebrates, the bone
homologous
to the stapes is usually called the columella; however, in reptiles, either term may be
used.
References
- Vallejo-Valdezate LA, Martín-Gil J, José-Yacamán M, Martín-Gil FJ, Gil-Carcedo LM. "Scanning electron microscopy images and energy-dispersive X-ray microanalysis of the stapes in otosclerosis and van der Hoeve syndrome". Laryngoscope. 2000 Sep;110(9):1505-10.
External links
stapes in Arabic: عظمة الركاب
stapes in Catalan: Estrep (os)
stapes in Danish: Stigbøjle (knogle)
stapes in German: Steigbügel (Anatomie)
stapes in Spanish: Estribo (hueso)
stapes in Esperanto: Piedingo (anatomio)
stapes in French: Stapes
stapes in Croatian: Stremen
stapes in Indonesian: Tulang sanggurdi
stapes in Italian: Staffa (anatomia)
stapes in Latin: Stapes (os)
stapes in Dutch: Stijgbeugel
(gehoorbeentje)
stapes in Polish: Strzemiączko
stapes in Portuguese: Estribo (osso)
stapes in Russian: Стремя (анатомия)
stapes in Slovak: Strmienok
stapes in Finnish: Jalustinluu
stapes in Swedish: Stigbygeln
stapes in Thai: กระดูกโกลน
stapes in Chinese: 镫骨
Synonyms, Antonyms and Related Words
Eustachian tube, anvil, auditory apparatus,
auditory canal, auditory meatus, auditory nerve, auditory ossicles,
auditory tube, auricle,
basilar membrane, bony labyrinth, cauliflower ear, cochlea, conch, concha, drumhead, ear, ear lobe, eardrum, endolymph, external ear,
hammer, incus, inner ear, lobe, lobule, lug, malleus, mastoid process, middle
ear, organ of Corti, outer ear, oval window, perilymph, pinna, round window, secondary
eardrum, semicircular canals, shell, stirrup, tympanic cavity,
tympanic membrane, tympanum, vestibule