甲弧影(英語:lunula),是指指(趾)甲近端的白色半月形區域。甲弧影是甲母質生發細胞在指(趾)甲遠側增生的標示[1]。
拇指的甲弧影最大,越向小指甲弧影越小[2]。甲弧影處皮膚所含水分較多,未完全形質化,顯現不出血液顏色,故而呈白色[3]。
參考資料
Wikiwand in your browser!
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.