Cranial fossa

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Cranial fossa

A cranial fossa is formed by the floor of the cranial cavity.

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Cranial fossa
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Three cranial fossae and its boundaries.

Boundaries
1: Sphenoidal limbus (anterior margin of the chiasmatic groove)
2: Posterior borders of the lesser wings of the sphenoid
3: Dorsum sellae of the sphenoid bone
4: Superior borders of the petrous part of the temporal bone

5: Groove for transverse sinus of the occipital bone
Identifiers
FMA321144
Anatomical terminology
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There are three distinct cranial fossae:[1]

  • Anterior cranial fossa (fossa cranii anterior), housing the projecting frontal lobes of the brain[2]
  • Middle cranial fossa (fossa cranii media), separated from the posterior fossa by the clivus and the petrous crest housing the temporal lobe[3]
  • Posterior cranial fossa (fossa cranii posterior), between the foramen magnum and tentorium cerebelli, containing the brainstem and cerebellum[4]

Additional images

See also

References

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