Sella turcica

Sella turcica

Infobox Bone
Name = Sella turcica
Latin =
GraySubject = 35
GrayPage = 147



Caption = Sphenoid bone. Upper surface. (There is no label for "Sella turcica", but "Tuberculum sellae" and "Fossa hypophyseos" are visible near center.)



Caption2 = Medial wall of left orbit. (Sella turcica labeled in upper right.)
System =
MeshName =
MeshNumber =
DorlandsPre = s_07
DorlandsSuf = 12728179
The Sella turcica (literally [http://en.wikipedia.org/wiki/
] ) is a saddle-shaped depression in the sphenoid bone at the base of the human skull.

Anatomy

The seat of the saddle is known as the hypophyseal fossa which holds the pituitary gland. Located anteriorly to the hypophyseal fossa is the tuberculum sellae.

Completing the formation of the saddle posteriorly is the dorsum sellae. The dorsum sellae is terminated laterally by the posterior clinoid processes.

Pathological Significance

Since the sella turcica forms a bony caudal border for the pituitary gland, a pituitary tumor can only extend upward in the rostral direction. This can result in compression of the optic chiasm which lies on top of the pituitary, enveloping the pituitary stalk. Compression of the optic chiasm can lead to bitemporal hemianopsia, and when there is no relevant trauma, this clinical finding is pathognomonic for a pituitary tumor.

ee also

* Sphenoidal sinuses
* Empty sella syndrome


=Additional

References

cite book|author=Marieb, Elaine Nicpon;|title=Human Anatomy & Physiology / Elaine M. Marieb. 6th Edition|publisher=Pearson Education, Inc.|year=2004|id=ISBN 0-8053-5462-X -- Page 209

External links

* [http://www.indiana.edu/~pietsch/sellaturcica400.jpgImage at Indiana.edu]
*


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Sella turcĭca — (lat.), Türkensattel, s. Schädel, S. 666 …   Meyers Großes Konversations-Lexikon

  • Sella turcica — The Turkish saddle in which sits the pituitary gland. The sella is a bony box in the middle of the head. It was called the sella turcica (the Turkish saddle) because of its resemblance to a saddle used by the Turks (and Arabs) which had supports… …   Medical dictionary

  • Sella turcica — Schädelbasis, Fossa cranii media (grün) Die Fossa cranii media (lat., ‚mittlere Schädelgrube‘) ist ein Abschnitt der Schädelhöhle, der den mittleren Teil des Gehirns, den Schläfenlappen des Großhirns und einen Teil des Stammhirns, beherbergt. Sie …   Deutsch Wikipedia

  • Sella turcica — Турецкое седло (лат. sélla túrcica) образование в теле клиновидной кости черепа человека в виде углубления, напоминающего по форме седло. В центре седла располагается гипофизарная ямка, заключающая гипофиз. С переди от ямки располагается бугорок… …   Википедия

  • Sella turcica — turkiškasis balnas statusas T sritis kaulai atitikmenys: lot. Sella turcica ryšiai: platesnis terminas – smegeninis paviršius siauresnis terminas – balno nugarėlė siauresnis terminas – miego kanalo anga siauresnis terminas – posmegeninės liaukos… …   Paukščių anatomijos terminai

  • Sella turcica — turkiškasis balnas statusas T sritis gyvūnų anatomija, gyvūnų morfologija atitikmenys: lot. Sella turcica ryšiai: platesnis terminas – kūnas siauresnis terminas – balno nugarėlė siauresnis terminas – posmegeninės liaukos duobė siauresnis terminas …   Veterinarinės anatomijos, histologijos ir embriologijos terminai

  • Sella turcica — Sẹlla tụrcica [lat. sella = Stuhl, Sessel; Sattel; nlat. turcicus = türkisch] w; , Sẹllae ...cae: „Türkensattel“, längliche, quer verlaufende Vertiefung des Keilbeins, in der die ↑Hypophyse liegt (Anat.) …   Das Wörterbuch medizinischer Fachausdrücke

  • sella turcica — a cavity in the basisphenoid where the adenohypophysis is found …   Dictionary of ichthyology

  • sella turcica — (Order Decapoda): In endoskeleton of crab like (brachyuran) decapod, fused and anteriorly extended endosternite on posterior border of last thoracic somite [Stachowitsch, 1992] …   Crustacea glossary

  • sella turcica — a depression in the body of the sphenoid bone that encloses the pituitary gland …   The new mediacal dictionary

Share the article and excerpts

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