Neck of posterior horn - Spinal cord - Spinal laminae - e-Anatomy
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Neck of posterior horn

Cervix cornus posterioris

  • Latin synonym: Cervix columnae posterioris
  • Related terms: Spinal lamina V

Definition

Muhammad A. Javaid

The neck of posterior horn refers to the region, that lies ventral to the head and corresponds with the Rexed lamina V.  The nucleus proprius, which lies mainly in the head (Rexed laminae III and IV), extends slightly into the neck of posterior horn (lamina V) as well.

The neck (and its constituent nucleus proprius) spans the entire length of the spinal cord. The nucleus proprius processes sensory input related to vibration, proprioception, and two-point discrimination, received via collaterals from ascending first-order neurons traveling through the dorsal column’s gracile and cuneate fasciculi.

References

  • Snell, R.S. (2010). ‘Chapter 4: The Spinal Cord and the Ascending and Descending Tracts’, in Clinical Neuroanatomy. (7th ed.) Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins, pp. 137-142.

  • Byrne, J.H. and Dafny, N. ‘Chapter 3: Anatomy of the Spinal Cord. [Content reviewed and revised 07 Oct 2020]. In Neuroanatomy Online, an open-access electronic laboratory for the neurosciences. McGovern Medical School at UTHealth; Accessed 2022 Oct 22. Available from: https://nba.uth.tmc.edu/neuroscience/m/s2/chapter03.html

  • Brown, A.G. (1982). Review article the dorsal horn of the spinal cord. Quarterly Journal of Experimental Physiology: Translation and Integration, 67(2), pp.193-212. https://doi.org/10.1113/expphysiol.1982.sp002630

  • Ganapathy, M.K., Reddy, V. and Tadi, P. Neuroanatomy, Spinal Cord Morphology. [Updated 2021 Oct 30]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK545206/

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