Dorsum sellae

Sphenoid bone. Upper surface. (Dorsum sellae is labeled in the white portion in the center.)

Base of the skull. Upper surface. (Dorsum sellae is not labeled, but sphenoid bone is in yellow, and Dorsum sellae would horizontally be at the exact center, and vertically at the level of the posterior clinoid process.)

Details
Identifiers
Latin| Dorsum sellae, dorsum sella turcica
TA98| A02.1.05.010
TA2| 594
FMA| 54718
Anatomical terms of bone

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The dorsum sellae is part of the sphenoid bone in the skull. Together with the basilar part of the occipital bone it forms the clivus.

In the sphenoid bone, the anterior boundary of the sella turcica is completed by two small eminences, one on either side, called the middle clinoid processes, while the posterior boundary is formed by a square-shaped plate of bone, the dorsum sellae, ending at its superior angles in two tubercles, the posterior clinoid processes, the size and form of which vary considerably in different individuals.

## Additional images[edit]

* Tentorium cerebelli from above.

* Dorsum sellae

## References[edit]

This article incorporates text in the public domain from page 147 of the 20th edition of Gray's Anatomy (1918)

## External links[edit]

* "Anatomy diagram: 34257.000-2". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2013-06-22.
* Anatomy photo:22:os-0912 at the SUNY Downstate Medical Center

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Neurocranium of the skull

Occipital|

| Squamous part|

* external
* Inion/External occipital protuberance
* Occipital bun
* External occipital crest
* Nuchal lines
* Suprainiac fossa
* planes
* Occipital
* Nuchal
* internal
* Cruciform eminence
* Internal occipital protuberance
* Internal occipital crest
* Groove for transverse sinus

|

Lateral parts|

* Condyle
* Condyloid fossa
* Condylar canal
* Hypoglossal canal
* jugular
* Jugular process
* Jugular tubercle

Basilar part|

* Pharyngeal tubercle
* Clivus

Other|

* Foramen magnum
* Basion
* Opisthion

Parietal|

* Parietal eminence
* Temporal line
* Parietal foramen
* Sagittal sulcus
* Sagittal keel
* Sagittal crest

Frontal|

| Squamous part|

* Frontal suture
* Frontal eminence
* external
* Superciliary arches
* Glabella
* foramina
* Supraorbital foramen
* Brow ridge
* Foramen cecum
* Zygomatic process
* internal
* Sagittal sulcus
* Frontal crest

|

Orbital part|

* Ethmoidal notch
* Fossa for lacrimal gland
* Trochlear fovea
* Frontal sinus
* Frontonasal duct

Temporal|

| Squamous part|

* Articular tubercle
* Suprameatal triangle
* Mandibular fossa
* Petrotympanic fissure
* Zygomatic process

|

Mastoid part|

* Mastoid foramen
* Mastoid process (Mastoid cells)
* Mastoid notch
* Occipital groove
* Sigmoid sulcus
* Mastoid antrum (Aditus)

Petrous part|

* Carotid canal
* Facial canal
* Hiatus
* Internal auditory meatus
* Cochlear aqueduct
* Stylomastoid foramen
* fossae
* Subarcuate fossa
* Jugular fossa
* canaliculi
* Inferior tympanic
* Mastoid
* Styloid process
* Petrosquamous suture
* (note: ossicles in petrous part, but not part of temporal bone)

Tympanic part|

* Suprameatal spine

Sphenoid|

| Surfaces|

* Superior surface: Sella turcica
* Dorsum sellae
* Tuberculum sellae
* Hypophysial fossa
* Posterior clinoid processes
* Ethmoidal spine
* Chiasmatic groove
* Middle clinoid process
* Petrosal process
* Clivus
* Lateral surface: Carotid groove
* Sphenoidal lingula
* Anterior surface: Sphenoidal sinuses

|

Great wings|

* foramina
* Rotundum
* Ovale
* Vesalii
* Spinosum
* Spine
* Infratemporal crest
* Sulcus of auditory tube

Small wings|

* Superior orbital fissure
* Anterior clinoid process
* Optic canal

Pterygoid
processes|

* fossae
* Pterygoid
* Scaphoid
* pterygoid plates
* Lateral
* Medial
* Pterygoid canal
* Hamulus

Other|

* Body
* Sphenoidal conchae

Ethmoid|

| Plates|

* Cribriform plate
* Crista galli
* Olfactory foramina
* Perpendicular plate

|

Surfaces|

* Lateral surface Orbital lamina
* Uncinate process
* Medial surface Supreme nasal concha
* Superior nasal concha
* Superior meatus
* Middle nasal concha
* Middle meatus

Labyrinth|

* Ethmoid sinus
* ethmoidal foramina
* Posterior
* Anterior

Portal:

* Anatomy

Authority control |

* Terminologia Anatomica

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