Spino-olivary tract
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Spino-olivary tract | |
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Spinal cord tracts, spino-olivary tract shown at lower right
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Identifiers | |
Latin | tractus spinoolivaris |
NeuroLex ID | birnlex_1484 |
TA98 |
A14.1.02.230
A14.1.04.117 A14.1.04.145 |
TA2 | 6109 |
FMA | 72643 |
Anatomical terms of neuroanatomy
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The spino-olivary tract (historically Helweg's tract ) is located in the anterior funiculus of the spinal cord and provides transmission of unconscious proprioception [1] and is involved in balance [ citation needed ] . This tract carries proprioception information from muscles and tendons as well as cutaneous impulses to the inferior olivary nuclei , located in the olivary bodies, also known as the olives. The olivary bodies are located in the medulla oblongata in the brainstem . Other tracts that carry proprioception are the DSCT , cuneocerebellar tract , and the VSCT . [1]
The spino-olivary tract is a non-specific indirect ascending pathway and is connected to the inferior olivary nuclei . The axons enter the spinal cord from the dorsal root ganglia and terminate on unknown second-order neurons in the posterior grey column . [2] The axons from the second-order neurons cross the midline and ascend as the spino-olivary tract in the white matter at the junction of the anterior and lateral columns . [2] The axons end by synapsing on third-order neurons in the inferior olivary nuclei in the medulla oblongata. The axons of the third-order neurons cross the midline and enter the cerebellum through the inferior cerebellar peduncle . [2]
The spino-olivary tract conveys information to the cerebellum from cutaneous and proprioceptive organs. Sensations are from the ipsilateral side as the fibres cross twice – once at the level of axons of second-order neurons and again at the level of axons of third-order neurons.
References
- 1 2 Darby, Susan A.; Frysztak, Robert J. (2014). "Neuroanatomy of the Spinal Cord". Clinical Anatomy of the Spine, Spinal Cord, and Ans . pp. 341–412. doi : 10.1016/b978-0-323-07954-9.00009-8 . ISBN 9780323079549 .
- 1 2 3 Snell, Richard S. (2010). Clinical Neuroanatomy . Lippincott Williams & Wilkins. ISBN 9780781794275 .
The
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Grey columns |
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White matter |
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