Difference between revisions of "Reabsorption and Secretion Along the Nephron Summary Table - Anatomy & Physiology"
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*Potassium is on the whole excreted from the '''principal cells of the collecting duct | *Potassium is on the whole excreted from the '''principal cells of the collecting duct | ||
**This occurs via the paracellular route and via ion channels | **This occurs via the paracellular route and via ion channels | ||
− | ** The gradient for the loss via the ion channels is maintained by the sodium/ | + | ** The gradient for the loss via the ion channels is maintained by the sodium/potassium ATPase in the basolateral membrane |
*The '''intercalated cells''' of the collecting duct absorb potassium using a potassium/hydrogen antiporter | *The '''intercalated cells''' of the collecting duct absorb potassium using a potassium/hydrogen antiporter | ||
*[[Reabsorption and Secretion Along the Distal Tubule and Collecting Duct - Anatomy & Physiology#Potassium|Link to Article]]</TD> | *[[Reabsorption and Secretion Along the Distal Tubule and Collecting Duct - Anatomy & Physiology#Potassium|Link to Article]]</TD> |
Revision as of 16:15, 4 September 2008
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Sodium |
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The reabsorption of sodium in the distal tubule is under the influence of two hormones:
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Potassium |
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Aldosterone acts of the sodium/potassium ATPase in the principal cells of the collecting duct increase potassium excretion. |
Urea |
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ADH makes the collecting duct more permeable to Urea |
H+ and HCO3- |
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Glucose |
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Protein |
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Calcium |
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The regulation of how much calcium is reabsorbed occurs in the athe distal tubule and collecting ducts. | Parathyroid hormone stimulates reabsorption. |
Organic Acids and Bases |
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