Crista galli

Crista galli
Crista galli
	Ethmoid bone from above.
	Ethmoid bone from behind.
Details
Part of	perpendicular plate of the ethmoid bone
System	skeletal
Identifiers
Latin	Crista galli
TA98	A02.1.07.004
TA2	724
FMA	57442
	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 in Morphology

The base of crista galli varies in height.[2] A retrospective study of CT data from 2007 to 2009 reviewed scans of 99 people. The results showed that in 63.6% of subjects the base extended less than 50% below the height of the cribriform plate.[2] In 28.3%, the base did not extend above the cribriform plate, while in 8.1%, the base extended more than 50% of the CG height below the top of the cribriform plate.[2]

History

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

References

"Ethmoid bone". www.anatomynext.com. Retrieved 2018-03-01.
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.

External links

MedEd at Loyola Radio/curriculum/ENT/jay84a.jpg
Floor of the cranial cavity (close-up) - BioWeb at University of Wisconsin System
"Anatomy diagram: 34257.000-2". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2014-01-01.
Cross section image: skull/x-front—Plastination Laboratory at the Medical University of Vienna

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[1] "Ethmoid bone". www.anatomynext.com. Retrieved 2018-03-01.

[:0-2] 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.