Scala tympani

Scala tympani

Infobox Anatomy
Name = PAGENAME
Latin =
GraySubject = 232
GrayPage = 1050


Caption = Interior of right osseous labyrinth. (Scala tympani labeled at right, inside cochlea.
Width = 300


Caption2 = Cross section of the cochlea (scala tympani labeled at bottom)
System =
MeshName = Scala+Tympani
MeshNumber = A09.246.631.246.848
DorlandsPre = s_03
DorlandsSuf = 12721078

Scala tympani is one of the perilymph-filled cavities in the cochlear labyrinth. It is separated from the scala media by the basilar membrane, and it extends from the round window to the helicotrema, where it continues as scala vestibuli.

The purpose of the perilymph-filled scala tympani and scala vestibuli is to transduce the movement of air that causes the tympanic membrane and the ossicles to vibrate, to movement of liquid and the basilar membrane. This movement is conveyed to the organ of Corti inside the scala media, composed of hair cells attached to the basilar membrane and their stereocilia embedded in the tectorial membrane. The movement of the basilar membrane compared to the tectorial membrane causes the sterocilia to bend. They then depolarise and send impulses to the brain via the cochlear nerve. This produces the sensation of sound.


=Additional

External links

* [http://www.kumc.edu/instruction/medicine/anatomy/histoweb/eye_ear/ear03.htm Slide] from University of Kansas
* [http://anatomy.iupui.edu/courses/histo_D502/D502f04/lecture.f04/Earf04/cochlea.jpgDiagram] at IUPUI
*
* [http://faculty.une.edu/com/abell/histo/cochleaw.jpgImage] at University of New England, Maine


Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Scala tympani — ⇒ Paukengang …   Deutsch wörterbuch der biologie

  • Scala tympani — būgno laiptas statusas T sritis jutimo organai atitikmenys: lot. Scala tympani ryšiai: platesnis terminas – sraigė …   Paukščių anatomijos terminai

  • Scala tympani — būgno laiptas statusas T sritis gyvūnų anatomija, gyvūnų morfologija atitikmenys: lot. Scala tympani ryšiai: platesnis terminas – perilimfinis tarpas …   Veterinarinės anatomijos, histologijos ir embriologijos terminai

  • Scala tympani — būgno laiptas statusas T sritis histologija, ląstelių chemija, histologinė chemija, audinių kultūra atitikmenys: lot. Scala tympani ryšiai: platesnis terminas – perilimfinis tarpas …   Veterinarinės anatomijos, histologijos ir embriologijos terminai

  • Scala tympani — būgno laiptas statusas T sritis histologija atitikmenys: lot. Scala tympani ryšiai: platesnis terminas – perilimfinis tarpas …   Medicininės histologijos ir embriologijos vardynas

  • scala tympani — scala tym·pa·ni tim pə .nī, .nē n, pl scalae tym·pa·no·rum .tim pə nōr əm, nȯr əm the lymph filled spirally arranged canal in the bony canal of the cochlea that is separated from the scala media by the basilar membrane, communicates at its upper …   Medical dictionary

  • Scala tympani — Schematische Zeichnung des Innenohrs Ausguss eines menschlichen Labyrinths Das Innenohr (Auris interna) ist neben dem Mittel und Außenoh …   Deutsch Wikipedia

  • scala tympani — …   Useful english dictionary

  • Scala — (ital. scala „Leiter“, „Treppe“) bezeichnet: im Bereich der Kultur: Teatro alla Scala, ein Opernhaus in Mailand Scala (Berlin), eine im Zweiten Weltkrieg zerstörte Varieté Bühne in Berlin Neues Theater in der Scala, ein Wiener Theater der… …   Deutsch Wikipedia

  • tympani — see CHORDA TYMPANI, SCALA TYMPANI, TEGMEN TYMPANI, TENSOR TYMPANI …   Medical dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”