2,232
edits
Changes
Essential Ion and Compound Balance and Homeostasis - Anatomy & Physiology (view source)
Revision as of 15:24, 4 September 2008
, 15:24, 4 September 2008→The Role of Ammonium in the Collecting Ducts
* No bicarbonate produced
* No bicarbonate produced
* See diagram
* See diagram
===The Effects of The Buffers on Body pH===
* When H<sup>+</sup> is binding to buffers other than bicarbonate it is excreted. This means that the reabsorption of bicarbonate represents a net gain of bicarbonate not just a replacement of what was filtered. This results in an increase in plasma pH.
* Bicarbonate is also produced as part of the secretion of ammonium in the proximal tubule
===Regulation===
* H<sup>+</sup> is important for both HCO<sub>3</sub><sup>-</sup> reabsorption and generation of new HCO<sub>3</sub><sup>-</sup>
* However the rate of secretion must be carefully regulated
* There must be enough H<sup>+</sup> secreted to reabsorb all the filtered HCO<sub>3</sub><sup>-</sup>
==Calcium==
==Calcium==