Base of the skull

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

The base of the skull (lat. basis cranii) is the most inferior area of the skull.

Base of the skull. Upper surface

## Contents

* 1 Structures
* 1.1 Bones
* 1.2 Sinuses
* 1.3 Foramina of the skull
* 1.4 Sutures
* 1.5 Other

## Structures

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Structures found at the base of the skull are for example:

* Foramen magnum
* Foramen ovale (skull)

### Bones

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* Ethmoid bone
* Sphenoid bone
* Occipital bone
* Frontal bone
* Parietal bone
* Temporal bone
* Petrous portion of the temporal bone

### Sinuses

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* Occipital sinus
* Superior sagittal sinus
* Superior petrosal sinus

### Foramina of the skull

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* Foramen cecum (frontal bone)
* Optic foramen
* Foramen lacerum
* Foramen rotundum
* Jugular foramen
* Internal auditory meatus
* Mastoid foramen
* Sphenoidal emissary foramen
* Foramen spinosum

### Sutures

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* Frontoethmoidal suture
* Sphenofrontal suture
* Sphenopetrosal suture
* Sphenoethmoidal suture
* Petrosquamous suture
* Sphenosquamosal suture

### Other

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* 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

Base of the skull. Inferior surface

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