下项线
Linea nuchalis inferior
- 拉丁语近义词: Linea inferior nuchae; Linea plani nuchalis
定义
下项线是从枕外嵴中心向两侧延伸的模糊骨嵴,续于枕骨鳞部。它们与上项线平行走行,上项线起自枕外隆凸,同样向两侧延伸于枕骨鳞部。有时,最上项线可位于上项线上方的头皮骨性区域内。
上项线与下项线之间的区域在内侧为头半棘肌的附着点,在外侧为头上斜肌的附着点。下项线以下的区域在内侧为头后小直肌的附着点,在外侧为头后大直肌的附着点。
參考資料
Drake, R.L., Vogl, A.W. and Mitchell, A.W.M. (2009). ‘Chapter 8: Head and Neck’ in Gray’s anatomy for Students. (2nd ed.) Philadelphia PA 19103-2899: Elsevier, pp. 816-817 & Fig. 8.20.
Germann AM, Kashyap V. Anatomy, Head and Neck, Occipital Bone, Artery, Vein, and Nerve. [Updated 2023 Jul 24]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK541093/