We just learned about the Renal Hilum.
Another part of the kidney is the Renal Pyramid.
When the blood comes into the kidneys from the arteries it gets split up into one of these pyramids to get filtered and cleaned up.
People can have anywhere from 10 to 18 pyramids in their kidney.
(from: wikipedia - renal medulla)
Kid Facts - Blast from the past: Bony Labryinth
