The Excretory System – From Your Heart to the Toilet: Crash Course Biology #129

Hank takes us on a fascinating journey through our excretory system to learn how our kidneys make pee.

References
http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookexcret.html
http://www.khanacademy.org/science/biology/v/the-kidney-and-nephron
Campbell Biology, 9th ed.