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 [edit on Wikidata]

The crista galli (Latin: "crest of the rooster") is a wedge-shaped, vertical, midline upward continuation of the perpendicular plate of the ethmoid bone of the skull,^[1] projecting above the cribriform plate^[2] into the cranial cavity. It serves as an attachment for the membranes surrounding the brain.^[1]

Structure

Attachments

The falx cerebri (a fold of the dura mater surrounding the brain) attaches to the crista galli.^{[citation needed]}

Relations

The olfactory bulbs of the olfactory nerve lie on either side of the crista galli on top of the cribriform plate.^{[citation needed]}

Variation

The base of crista galli varies in height.^[2] A bifid crista galli may suggest intracranial extension of a nasal dermoid cyst.^[3]

References

1. Fehrenbach, Margaret J.; Herring, Susan W. (2017). Illustrated Anatomy of the Head and Neck (5th ed.). St. Louis: Elsevier. p. 57. ISBN 978-0-323-39634-9.
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. PMID 20196125. S2CID 12865173.
3. Clark, W. D.; Bailey, B. J.; Stiernberg, C. M. (February 1985). "Nasal dermoid with intracranial involvement". Otolaryngology–Head and Neck Surgery. 93 (1): 102–104. doi:10.1177/019459988509300121. ISSN 0194-5998. PMID 3920605. S2CID 12407939.

External links

• MedEd at Loyola Radio/curriculum/ENT/jay84a.jpg
• Floor of the cranial cavity (close-up)^{[dead link‍]} - 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