Body of sphenoid
Last revised by Craig Hacking on 1 Jul 2021
Citation, DOI, disclosures and article data
Citation:
Wong A, Hacking C, Carpenter G, et al. Body of sphenoid. Reference article, Radiopaedia.org (Accessed on 10 Oct 2024) https://doi.org/10.53347/rID-37480
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rID:
37480
Article created:
10 Jun 2015,
Aaron Wong
Disclosures:
At the time the article was created Aaron Wong had no recorded disclosures.
View Aaron Wong's current disclosures
Last revised:
1 Jul 2021,
Craig Hacking ◉
Disclosures:
At the time the article was last revised Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosures
Revisions:
15 times, by
7 contributors -
see full revision history and disclosures
Systems:
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Synonyms:
- sphenoid body
The body of the sphenoid bone is the midline cubical portion of the sphenoid bone, hollowed by the sphenoid air sinuses.
Gross anatomy
The body has superior, inferior, anterior, posterior, and lateral surfaces.
The superior surface features:
- ethmoidal spine: prominent spine that articulates with the cribriform plate and grooved on either side by olfactory bulbs of CN I
- planum sphenoidale
- limbus sphenoidale
- chiasmatic groove (also known as prechiasmatic sulcus or optic groove): optic chiasm lies above and behind
- optic canal: transmits optic nerve and ophthalmic artery
- tuberculum sellae: elevation anterior to sella turcica
- sella turcica: deep depression, pituitary fossa is deepest part
- middle clinoid processes: small prominences on anterior part of sella turcica
- dorsum sellae: plate of bone forming posterior boundary of sella turcica
- posterior clinoid processes: tubercles on superior angle of dorsum sellae
- petrosal process: articulates with petrous apex of the temporal bone
The inferior surface features:
- sphenoidal rostrum: continuous with sphenoidal crest, articulates with the vomer
- vaginal process: projecting lamina on either side of rostrum, directed medially. Between these processes and the alae of the vomer are the variably present vomerovaginal canal.
The anterior surface features:
- sphenoidal crest: middle, vertical crest that articulates with perpendicular plate of ethmoid that contributes to nasal septum
- sphenoidal air sinus opening
- sphenoidal conchae
The posterior surface forms part of the clivus.
Articulations
The posterior surface joins the basilar part of the occipital bone.
The lateral surface (2) unites with the greater wing and medial pterygoid plate. It features:
- carotid groove: broad groove that lodges internal carotid artery and cavernous sinus
- lingula: ridge of bone between body and greater wing
References
- 1. Gray's Anatomy (40e). Churchill Livingstone. (2011) ISBN:0443066841. Read it at Google Books - Find it at Amazon
- 2. Moore KL, Agur AMR, Dalley AF. Clinically oriented anatomy. LWW. ISBN:1451119453. Read it at Google Books - Find it at Amazon
- 3. Last's anatomy, regional and applied. Churchill Livingstone. ISBN:044304662X. Read it at Google Books - Find it at Amazon
- 4. Butler P, Mitchell A, Healy JC. Applied Radiological Anatomy. Cambridge University Press. (2012) ISBN:0521766664. Read it at Google Books - Find it at Amazon
- 5. Robert H. Whitaker, Neil R. Borley. Instant Anatomy. ISBN: 9780632054039
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