肋弓
Arcus costalis
定义
**肋缘（肋弓）**是由假肋软骨内侧缘及一根真肋（第七肋至第十肋）的软骨内侧缘共同构成的弓形结构。
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/).
