Corticobulbar tract
Citation, DOI, disclosures and article data
Citation:
Sciacca F, Hacking C, Chau L, et al. Corticobulbar tract. Reference article, Radiopaedia.org (Accessed on 08 Dec 2024) https://doi.org/10.53347/rID-70519
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rID:
70519
Article created:
Disclosures:
At the time the article was created Francesco Sciacca had no recorded disclosures.
View Francesco Sciacca's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Craig Hacking had the following disclosures:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.
View Craig Hacking's current disclosures
Revisions:
7 times, by
7 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Corticonuclear tract
The corticobulbar (or corticonuclear) tract originates primarily in Brodmann area 4 and exits at the brainstem to synapse on the lower motor neurons of the cranial nerves bilaterally. The exception to this bilateral connection is the facial nerve and hypoglossal nerve. Innervation to the lower half of the face (via the facial nerve) and the tongue (via the hypoglossal nerve) is only contralateral.
The corticobulbar fibers pass through the corona radiata and run through the genu of the internal capsule into the brainstem 1.
It is involved in the movement of the face, head and neck 2.
References
- 1. Mcminn. Last's Anatomy. (2003) ISBN: 9780729537520 - Google Books
- 2. Qais AbuHasan, Sunil Munakomi. Neuroanatomy, Pyramidal Tract. (2019) Pubmed
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