pronephros
n. [动]前肾( 脊椎动物最原始的泌尿器官)
形容词：pronephric 名词复数：pronephroi
例句
用作名词(n.)
- The pronephros does not function, but it marks at the fourth week of development the start of renal development.前肾生肾节内，从头侧至尾端先后出现横行前肾小管，内侧端开口于胚内体腔，外侧端与头尾走行的前肾管相通。