2.72 Water re-absorption

• When the filtration occurs it will filter out too much water.
• As the filtrate passes through the structure to the collecting duct, water is removed from the filtrate.
• The water is then returned back into the blood vessels.
• The water will go back into the blood stream.
• The water has been selected and been reabsorbed into the blood.
• Then we get the phrase selected reabsorption.