鞍背
Dorsum sellae
定义
蝶骨上面的后界由一块方形骨板构成，即鞍背。
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/).
