Family Friendly & Specialty Dentists in London, UK
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Anatomy of the Middle Cranial Fossa:
- Formed by the sphenoid bones and temporal bones
- Lodges the temporal lobes and the pituitary gland
- Deeper than the anterior cranial fossa
- Narrow medially and widens laterally
- Separated from the posterior cranial fossa by the clivus and petrous crest
Features of the Middle Cranial Fossa:
- Middle part presents the chiasmatic groove and tuberculum sellae
- Chiasmatic groove ends at the optic foramen
- Anterior clinoid process is directed backward and medialward
- Sella turcica contains the pituitary gland and middle clinoid processes
- Carotid groove lodges the cavernous sinus and internal carotid artery
Lateral Parts of the Middle Cranial Fossa:
- Support the temporal lobes of the brain
- Marked by depressions for the brain convolutions
- Traversed by furrows for the middle meningeal vessels
- Furrows begin near the foramen spinosum
- Apertures include the superior orbital fissure, foramen rotundum, foramen ovale, foramen Vesalii, and foramen spinosum
Clinical Significance of the Middle Cranial Fossa:
- Middle fossa craniotomy is used to remove acoustic neuromas
- Acoustic neuromas grow within the internal auditory canal
- Temporal bone is involved in the procedure
References and Additional Information:
- Grays Anatomy, 20th edition, page 190
- Grays Anatomy: The Anatomical Basis of Clinical Practice, 42nd edition
- Grays Clinical Anatomy, Cranial Fossae
- Additional images available
- External links to Wikimedia Commons
