Concept
Version 14
Created by Boundless
Tubular Secretion

Tubular secretion
Diagram showing the basic physiologic mechanisms of the kidney and the three steps involved in urine formation.
This is a diagram that shows the basic physiologic mechanisms of the kidney and the three steps involved in urine formation, namely filtration, reabsorption, secretion, and excretion.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Urine formation."
http://upload.wikimedia.org/wikipedia/commons/2/2b/Physiology_of_Nephron.png
Wikimedia
CC BY-SA.