All of this comes together in this region here called the renal pelvis,

这块集合的区域被称为肾盂
this region where the renal artery enters,

肾动脉于此进入
the renal vein leaves,

肾静脉于此离开
and the ureter exits the kidney as well.

而且输尿管也从这里离开肾脏
Everything collects sort of at--what's at the bottom of this diagram

一切都会集于此在这幅图的底部
but it would be on the inside or medial surface of the kidney

位于肾脏的内层或中层
and it's in its anatomic position.

并且在它的解剖位置上
I mentioned last time that the functional units of the kidney

上次我提到过肾脏的功能单位
are this structure called a nephron.

是这一被称作肾单位的结构
Each kidney has about a million of these nephrons

每一个肾脏有着大约一百万的肾单位
and that they're oriented within these layers,

并且它们排列在这些层里面
so a nephron is going to sit sort of this axis here,

所以说一个肾单位会位于这条轴上