Cranial fossa

Cranial fossa
Three cranial fossae and its boundaries.
  Purple: Anterior cranial fossa
  Blue: Middle cranial fossa
  Green: Posterior cranial fossa

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

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

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

  • Animation.
    Animation.
  • Illustration.
    Illustration.
  • Superior view and lateral view.
    Superior view and lateral view.

See also

Wikimedia Commons has media related to Cranial fossae.

References

  1. ^ "The Cranial Fossae - TeachMeAnatomy". teachmeanatomy.info. Retrieved 2024-05-18.
  2. ^ "Anterior Cranial Fossa - Boundaries - Contents - TeachMeAnatomy". teachmeanatomy.info. Retrieved 2024-05-18.
  3. ^ "The Skull | Anatomy and Physiology I". courses.lumenlearning.com. Retrieved 2024-05-18.
  4. ^ "Foramina and fissures of the skull". Kenhub. Retrieved 2024-05-18.