Urine Production Video - Osmotic Gradients
This is kind of fast, but it shows the counter-current diffusion of water and ions from the Nephron loop and vasa recta.
Here's a fun video - why coffee and alcohol make you pee more.
|Here I am next to the carcass, holding the skull|
|See my geeking-out face? Also notice the front limbs curled neatly under the animal.|
|Head, neck and open thorax of deer. Notice lack of blood on fur.|