两极间部分
Pars interpolaris nuclei spinalis nervi trigeminalis
- 拉丁语近义词: Subnucleus interpolaris
定义
脊髓三叉神经核的极间部是该神经核的中间节段,位于其上方的口侧部与下方的尾侧部之间。该节段负责接收来自面部外侧区域的痛觉和温度觉信息,具体为口腔区域和鼻腔区域外侧的区域,但不延伸至颊部和下颌区域。
为充分理解这一概念,有必要了解脊髓三叉神经核和三叉神经脊束的躯体定位组织结构,该结构按从上至下的方式排列。在此排列中,中央区域或口周区域在神经核中更靠吻侧(即顶部)表达,而距口部较远的区域则在脊髓三叉神经核中更靠尾侧(即底部)表达。这种躯体定位映射将脊髓三叉神经核从吻侧至尾侧依次划分为三个亚部:口侧部、极间部和尾侧部。
參考資料
Blumenfeld, H. (2010). ‘Chapter 12: Brainste I: Surface anatomy and cranial nerves’, in Neuroanatomy through clinical cases. (2nd ed.) Sunderland, Mass.: Sinauer Associates, pp. 476-477 & Fig 12.9.
Snell, R.S. (2010). ‘Chapter 11: The cranial nerve nuclei and their central connections and distribution’, in Clinical Neuroanatomy. (7th ed.) Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins, pp. 341-344.
Patel NM, Jozsa F, Das JM. Neuroanatomy, Spinal Trigeminal Nucleus. [Updated 2022 Oct 18]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK539729/