Crista_galli

Crista galli

Crista galli

Upper part of the ethmoid bone of the skull

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]

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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. [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. [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. [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.


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