and the inner part or the medulla,

内部或者髓质
the part where all the vessels come in is poingting down.

所有进入其中的管脉都是向下的
Oriented within each kidney are a million,

对应每个肾脏有一百万
over a million of these functional units called nephrons.

超过一百万的这种功能单位称为肾单元
Nephrons are just a series of tubes

肾单位是一连串的导管
that are arranged in a very specific configuration.

有非常特殊的结构
We'll see in the next slide that nephrons look slightly different,

在下一个幻灯片中肾单元有些许不同
there are nephrons--of these million there are different populations

分布密度不同的百万个肾单位
that look slightly different but they all have the same basic anatomy.

之间有些许不同但有相同的基本解剖形态
I'll just trace through the anatomy here starting at this little tuft

我将从肾单元顶部或顶部附近的丛脉开始
at the top of the nephron or near the top of the nephron,

沿着解剖的路径讲
so near the capsule is a structure called the glomerulus.

在囊附近有一个称为肾小球的结构