脊椎板VI
Basis cornus posterioris
定义
后角底是脊髓中位于后角颈腹侧的区域。从细胞构筑学角度而言，其对应于Rexed第VII层，即脊髓外侧中间质。
位于后角底的主要神经核包括胸椎后核（即Clarke背核，又称Clarke柱），以及内脏传入核。这些神经核主要见于胸段及上腰段脊髓节段，并不贯穿脊髓全长。
胸椎后核（即Clarke背核）存在于C8至L3/L4脊髓节段，在接受来自肌梭和高尔基腱器官的无意识本体感觉传入方面发挥关键作用。其发出的轴突参与构成脊髓小脑后束和脊髓小脑前束，将本体感觉信息传递至小脑进行无意识整合处理。
内脏传入核位于Clarke柱的外侧，主要负责接收内脏传入信号。
在T1至L2脊髓节段，后角底构成脊髓外侧中间质，并向外侧延伸，形成一个独特的结构，称为侧角。侧角因容纳这些脊髓节段内的交感神经节前神经元而具有重要意义。
參考資料
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/
YousufDar, M., 2015. Neuroanatomical structures of spinal cord–A review. International Journal of Livestock Research. 5(7), pp. 11-23. https://doi.org/10.1113/expphysiol.1982.sp002630
