Base of skull
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Skull base | |
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![]() Base of the skull, inner surface
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![]() Base of the skull, inferior or outer surface. Showing various muscle attachments.
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Details | |
Latin | basis cranii externa et. interna |
Identifiers | |
TA | Lua error in Module:Wikidata at line 744: attempt to index field 'wikibase' (a nil value). |
TH | {{#property:P1694}} |
TE | {{#property:P1693}} |
FMA | {{#property:P1402}} |
Anatomical terms of bone
[[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]
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The base of skull is the most inferior area of the skull, composed of the endocranium and lower parts of the skull roof.
Contents
Structure
File:Gray187.png
Base of the skull. Inferior surface, attachment of muscles marked in red.
Structures found at the base of the skull are for example:
Bones
There are 5 bones that make up the Base of the skull -
Sinuses
Foramina of the skull
- Foramen cecum
- Optic foramen
- Foramen lacerum
- Foramen rotundum
- Foramen magnum
- Foramen ovale
- Jugular foramen
- Internal auditory meatus
- Mastoid foramen
- Sphenoidal emissary foramen
- Foramen spinosum
Sutures
- Frontoethmoidal suture
- Sphenofrontal suture
- Sphenopetrosal suture
- Sphenoethmoidal suture
- Petrosquamous suture
- Sphenosquamosal suture
Other

The foramina in the base of the skull are exit and entry-points for veins, arteries and cranial nerves.
- Sphenoidal lingula
- Subarcuate fossa
- Dorsum sellae
- Jugular process
- Petro-occipital fissure
- Condylar canal
- Jugular tubercle
- Tuberculum sellae
- Carotid groove
- Fossa hypophyseos
- Posterior clinoid processes
- Sigmoid sulcus
- Internal occipital protuberance
- Internal occipital crest
- Ethmoidal spine
- Vestibular aqueduct
- Chiasmatic groove
- Middle clinoid process
- Groove for sigmoid sinus
- Trigeminal ganglion
- Middle cranial fossa
- Anterior cranial fossa
- Middle meningeal artery
- Cribriform plate
- Posterior cranial fossa
- Nasociliary nerve
- Hypoglossal canal
Additional images
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Gray193.png
Base of the skull. Upper surface
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Wikimedia Commons has media related to Cranial base. |