Trigeminal ganglion
Citation, DOI, disclosures and article data
Citation:
Hacking C, Yu Y, Trigeminal ganglion. Reference article, Radiopaedia.org (Accessed on 09 Dec 2024) https://doi.org/10.53347/rID-66939
rID:
66939
Article created:
Disclosures:
At the time the article was created Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Yoshi Yu had no financial relationships to ineligible companies to disclose.
View Yoshi Yu's current disclosures
Revisions:
4 times, by
2 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- semilunar ganglion
- Gasserian ganglion
- Gasser ganglion
The trigeminal ganglion, also known as the Gasser, Gasserian or semilunar ganglion, is the large crescent-shaped sensory ganglion of the trigeminal nerve located in the trigeminal cave (Meckel cave) surrounded by cerebrospinal fluid.
The ganglion contains the cell bodies of pseudounipolar sensory neurons of the trigeminal nerve (similar to dorsal root ganglia of the spinal cord) 5. From the ganglion, the 3 major divisions of the trigeminal nerve emerge anteriorly and inferiorly, with the first two (ophthalmic and maxillary divisions) passing anteriorly to enter the cavernous sinus, and the third (mandibular division) descending into the foramen ovale.
On this page:
Relations
medial: motor root of the trigeminal nerve and sphenoid bone
lateral: posterior part of the cavernous sinus, petrous apex and petrous segment of the internal carotid artery
anterior: cavernous sinus and cavernous segment of the ICA
posterior: prepontine cistern
inferior: greater petrosal nerve and middle cranial fossa
Blood supply
small ganglionic branches of the cavernous portion of the ICA
accessory meningeal artery (from the maxillary artery, via the foramen ovale)
Innervation
The ganglionic epineurium is innervated by the nervus spinosus from the mandibular division of the trigeminal nerve which re-enters the skull via the foramen spinosum.
References
- 1. Moore KL, Agur AMR, Dalley AF. Clinically oriented anatomy. LWW. ISBN:1451119453. Read it at Google Books - Find it at Amazon
- 2. Last's anatomy, regional and applied. Churchill Livingstone. ISBN:044304662X. Read it at Google Books - Find it at Amazon
- 3. Butler P, Mitchell A, Healy JC. Applied Radiological Anatomy. Cambridge University Press. (2012) ISBN:0521766664. Read it at Google Books - Find it at Amazon
- 4. Susan Standring. Gray's Anatomy. ISBN: 9780702052309
- 5. Shmuel Price & Daniel T. Daly. Neuroanatomy, Trigeminal Nucleus. StatPearls Publishing. 2022. https://www.ncbi.nlm.nih.gov/books/NBK539823/ - Pubmed
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