牙龈
Gingiva
定义
牙龈由致密纤维组织构成，与牙槽突的骨膜紧密相连，并环绕牙颈部。其表面覆盖光滑且富含血管的黏膜，该黏膜以感觉敏感性有限为显著特点。在牙颈部周围，此黏膜呈现出众多细小乳头，并向牙槽窝内折返，与衬覆该腔的骨膜相延续。
參考資料
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
