Spinoreticular Tract
Get Spinoreticular Tract essential facts below. View Videos or join the Spinoreticular Tract discussion. Add Spinoreticular Tract to your Like2do.com topic list for future reference or share this resource on social media.
Spinoreticular Tract
Spinoreticular tract
Latin tractus spinoreticularis
TA A14.1.02.231
FMA 75693
Anatomical terminology

The spinoreticular tract is an ascending pathway in the white matter of the spinal cord, positioned closely to the lateral spinothalamic tract. The tract is from spinal cord--to reticular formation[1]-- to thalamus.

It is responsible for automatic responses to pain, such as in the case of injury.


The spinoreticular tract utilizes four levels of neurons, unlike most ascending tracts which have first- through third-order neurons. The tract begins with first-order neurons, which immediately synapse with second-order neurons in the posterior horn of the spinal column. These neurons decussate to the opposite side (anterolateral), and travel up the spinal column. It terminates in the brainstem at the medullary-pontine reticular formation. Information is sent from there to the intradmedian nucleus of the thalamic intralaminar nuclei. The thalamic intralaminar nuclei project diffusely to entire cerebral cortex where pain reaches conscious level and promotes behavioral arousal. It is believed that spinoreticular tract projects to neurons having a large receptive fields that may cover wide areas of the body and play a role in the memory and in the affective (emotional) component of pain.

It is still undetermined if the spinoreticular tract possesses ipsilateral fibers in addition to those that decussate. It is hypothesized that during development the tract was bilateral, but that the ipsilateral synapses became ineffective during development.


  1. ^ "Chapter 25:Neural Mechanisms of Cardiac Pain: The Anterolateral System". Retrieved .
  • Saladin, Kenneth S. Anatomy & Physiology: The Unity of Form and Function. New York: McGraw-Hill. 2010.
  • Mense, Siegfried & Gerwin, Robert D. Muscle Pain: Understanding and Mechanisms. New York: Springer. 2010.
  • Julien N, Goffaux P, Arsenault P, et al. Widespread pain in fibromyalgia is related to a deficit

of endogenous pain inhibition. Pain 2005;114(1-2):295-302.

Further reading

  • Mark L. Latash (2008). Neurophysiological Basis of Movement. Human Kinetics. p. 171. ISBN 9780736063678.
  • Richard S. Snell (2005). Clinical Neuroanatomy. Lippincott Williams & Wilkins. p. 150. ISBN 9780781759939.

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



Top US Cities

Like2do.com was developed using defaultLogic.com's knowledge management platform. It allows users to manage learning and research. Visit defaultLogic's other partner sites below:
PopFlock.com : Music Genres | Musicians | Musical Instruments | Music Industry