Thursday, 3 November 2011

2.72 Water re-absorption

Understand that water is reabsorbed into the flood from collecting duct

From the previous syllabus statement we learned that Ultrafiltration happens in the bowman's capsule.
  • High pressure blood is forced into the bowman's capsule and the dissolved contents of the blood are forced into the glumerula filtrate and this tube contains glucose, water, salts and urea.
  • When the filtration occurs it will filter out too much water and as the filtrate passes along the tubule here. When it reaches the Collecting duct as the filtrate pass through the collecting duct what happens is that water is removed from the filtrate.
  • The water is then returned to the blood vessel and will go back to the blood stream.
  • Selected reabsorption occurs in the collecting duct.

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