Vagal trigone
The cells of the dorsal nucleus of vagus nerve are spindle-shaped, like those of the posterior column of the spinal cord, and the nucleus is usually considered as representing the base of the posterior column. It measures about 2 cm. in length, and in the lower, closed part of the medulla oblongata is situated behind the dorsal nucleus of the vagus; whereas in the upper, open part it lies lateral to that nucleus, and corresponds to an eminence, named the vagal trigone (ala cinerea), in the rhomboid fossa.
| Vagal trigone | |
|---|---|
 Dissection of brain-stem. Dorsal view. | |
 Human caudal brainstem posterior view (Trigonum nervi vagi is #7) | |
| Details | |
| Identifiers | |
| Latin | trigonum nervi vagi |
| NeuroNames | 634 |
| TA98 | A14.1.05.709 |
| FMA | 78445 |
| Anatomical terms of neuroanatomy | |
The vagal trigone is separated from the area postrema by a narrow strip of thickened ependyma – the funiculus separans.[1]
References
- Mirza M, M Das J (8 July 2019). Neuroanatomy, Area Postrema. StatPearls; Treasure Island (FL): StatPearls Publishing. PMID 31334969.
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This article incorporates text in the public domain from page 781 of the 20th edition of Gray's Anatomy (1918)
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