Pterygoid fossa

Multi tool use
Not to be confused with Pterygoid fovea.
Pterygoid fossa |

Sphenoid bone. Upper and posterior surfaces. (Pterygoid fossa labeled at left.)
|
Details |
Identifiers |
Latin |
Fossa pterygoidea ossis sphenoidalis |
TA |
A02.1.05.046 |
FMA |
84970 |
Anatomical terms of bone[edit on Wikidata]
|
The pterygoid fossa is an anatomical term for the fossa formed by the divergence of the lateral pterygoid plate and the medial pterygoid plate of the sphenoid bone.
Structure
The lateral and medial pteryoid plates (of the pterygoid process of the sphenoid bone) diverge behind and enclose between them a V-shaped fossa, the pterygoid fossa. This fossa faces posteriorly, and contains the medial pterygoid muscle and the tensor veli palatini muscle.
See also
- Pterygoid fovea
- Scaphoid fossa
- Pterygoid process
References
This article incorporates text in the public domain from page 151 of the 20th edition of Gray's Anatomy (1918)
The neurocranium of the skull
|
Occipital |
Squamous part |
external
Inion/External occipital protuberance
- Occipital bun
- External occipital crest
- Nuchal lines
- Suprainiac fossa
planes
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 |
|
|
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
- 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 |
|
|
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 plates
- Pterygoid canal
- Hamulus
|
Other |
|
|
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
|
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