Base of skull
Skull base | |
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![]() Base of the skull, inner surface | |
![]() Base of the skull, inferior or outer surface. Showing various muscle attachments. | |
Details | |
Identifiers | |
Latin |
basis cranii externa et. interna |
TA | A02.1.00.044 |
FMA | 52801 |
The base of skull is the most inferior area of the skull, composed of the endocranium and lower parts of the skull roof.
Structure
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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 -
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Exobasis
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
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Endobasis-resistances beams
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Endobasis-resistances nodes
Sutures
- Frontoethmoidal suture
- Sphenofrontal suture
- Sphenopetrosal suture
- Sphenoethmoidal suture
- Petrosquamous suture
- Sphenosquamosal suture
Other
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The foramina in the base of the skull are exit and entry-points for veins, arteries and cranial nerves.
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The cranial nerves as they exit through various foramina.
- 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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Base of the skull. Upper surface
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Base of skull
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Base of skull - crista galli, cribriform plate and foramen cecum
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Base of skull - sella turcica
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The anterior, middle and posterior cranial fossa in different colors
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This article is issued from Wikipedia - version of the 12/4/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.