Stapes

Stapes

Infobox Bone
Name = Stapes
Latin =
GraySubject = 231
GrayPage = 1045


Caption = A. Left stapes. B. Base of stapes, medial surface.


Caption2 = Chain of ossicles and their ligaments, seen from the front in a vertical, transverse section of the tympanum.


MapPos = Stapes| MapCaption = Bones and muscles in the tympanic cavity in the middle ear
Precursor = 2nd branchial arch [EmbryologyUNC|hednk|023]
Origins =
Insertions =
Articulations =
MeshName = Stapes
MeshNumber = A09.246.397.247.806
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. [http://anatomy.med.umich.edu/nervous_system/ear_ans.html Stapedius muscle]

In non-mammalian vertebrates, the bone homologous to the stapes is usually called the "columella"; however, in reptiles, either term may be used.

ee also

*Bone terminology
*Terms for anatomical location

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

*http://web.archive.org/web/20061111030032/http://webpages.marshall.edu/~hurlburt/310lec13.html
*http://faculty.juniata.edu/yohn/reptilialab.htm
* http://research.meei.harvard.edu/otopathology/3dmodels/


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Look at other dictionaries:

  • Stapes —  Cet article concerne l os de l oreille. Pour le matériel équestre, voir étrier. Les osselets de l oreille interne Le s …   Wikipédia en Français

  • Stapes —   [mittellateinisch] der, /... pedes, Anatomie: der Steigbügel, eines der drei Gehörknöchelchen. * * * Sta|pes, der; , Stapedes [mlat. stapes (Gen.: stapedis)] (Anat.): ↑Steigbügel (2) …   Universal-Lexikon

  • stapes — stirrup bone in the middle ear, 1660s, from Modern Latin (1560s), special use of M.L. stapes stirrup, probably an alteration of L.L. stapia, related to stare to stand + pedem, accusative of pes foot (see FOOT (Cf. foot)). So called because the… …   Etymology dictionary

  • stapes — [stā′pēz΄] n. pl. stapes or stapedes [stə pē′dēz΄] [ModL < ML, a stirrup, prob. < Gmc, as in MDu stap, a STEP, Langobardic staffa, step, stirrup] Anat. a small, stirrup shaped bone, the innermost of a chain of three bones in the middle ear… …   English World dictionary

  • Stapes — Sta pes (st[=a] p[=e]z), n. [LL., a stirrup.] (Anat.) The innermost of the ossicles of the ear; the stirrup, or stirrup bone; so called from its form. See Illust. of {Ear}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Stapes — Stapes, 1) (Chir.), Steigbügelbinde; 2) der Steigbügel. im Ohr …   Pierer's Universal-Lexikon

  • Stāpes — (lat., »Steigbügel«), eins der Gehörknöchelchen, s. Gehör, S. 481, und Ohr, S. 3 …   Meyers Großes Konversations-Lexikon

  • Stapes — Der Steigbügel (lat. Stapes) ist das dritte der Gehörknöchelchen im Mittelohr der Säugetiere. Der Steigbügel ist der kleinste Knochen des menschlichen Körpers. Er ist im Mittel 3,3 mm hoch, die Fußplatte 3 mm lang und 1,4 mm breit.[1] Er trägt… …   Deutsch Wikipedia

  • stapes —   n. innermost bone of ear; stirrup bone.    ♦ stapedectomy, n. removal of stapes and insertion of an artificial replacement to relieve deafness.    ♦ stapedial, a. pertaining to stapes.    ♦ stapediform, a. like a stapes or stirrup …   Dictionary of difficult words

  • stapes — noun (plural stapes or stapedes) Etymology: New Latin staped , stapes, from Medieval Latin, stirrup, alteration of Late Latin stapia Date: 1615 the innermost ossicle of the middle ear of mammals called also stirrup see ear illustration …   New Collegiate Dictionary

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