Concept
Version 13
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Tubular Reabsorption

Tubular secretion
Diagram showing the basic physiologic mechanisms of the kidney and the three steps involved in urine formation. amely filtration, reabsorption, secretion, and excretion.
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
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"Urine formation."
http://upload.wikimedia.org/wikipedia/commons/2/2b/Physiology_of_Nephron.png
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