Crista galli

Crista galli
Ethmoid bone from above.
Ethmoid bone from behind.
Details
Part ofperpendicular plate of the ethmoid bone
Systemskeletal
Identifiers
LatinCrista galli
TA98A02.1.07.004
TA2724
FMA57442
Anatomical terms of bone

The crista galli (Latin: "crest of the rooster") is the upper part of the perpendicular plate of the ethmoid bone of the skull. It rises above the cribriform plate. The falx cerebri (a fold of the dura mater surrounding the brain) attaches to the crista galli.

Structure

The crista galli is the upper part of the perpendicular plate of the ethmoid bone of the skull.[1] It rises above the cribriform plate.[2] The falx cerebri (a fold of the dura mater surrounding the brain) attaches to the crista galli. The olfactory bulbs of the olfactory nerve lie on either side of the crista galli on top of the cribriform plate.

Variation

The crista galli varies in height.[2] In most people, it extends slightly below the cribriform plate.[2] In around 28%, it is completely above the cribriform plate, whilst in around 8%, it is over 50% below the top of the cribriform plate.[2]

History

The term "crista galli" is Latin for "crest of the rooster".

References

  1. ↑ "Ethmoid bone". www.anatomynext.com. Retrieved 2018-03-01.
  2. 1 2 3 4 Hajiioannou, Jiannis; Owens, David; Whittet, Heikki B. (2010). "Evaluation of anatomical variation of the crista galli using computed tomography". Clinical Anatomy. 23 (4): 370–373. doi:10.1002/ca.20957. ISSN 1098-2353.
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