Difference between revisions of "Reabsorption and Secretion Along the Nephron Summary Table - Anatomy & Physiology"
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− | {{ | + | {{toplink |
− | + | |backcolour = C1F0F6 | |
+ | |linkpage =Reabsorption and Secretion Along the Nephron - Anatomy & Physiology | ||
+ | |linktext =REABSORPTION AND SECRETION ALONG THE NEPHRON | ||
+ | |maplink = Urinary System (Content Map) - Anatomy & Physiology | ||
+ | |pagetype =Anatomy | ||
+ | }} | ||
+ | <br> | ||
<TABLE CELLPADDING="2" CELLSPACING="2" WIDTH="100%"> | <TABLE CELLPADDING="2" CELLSPACING="2" WIDTH="100%"> | ||
<TR> | <TR> | ||
− | <TD | + | <TD BGCOLOR="#C1f0f6"><center>'''Substance'''</center></TD> |
− | <TD | + | <TD BGCOLOR="#C1f0f6"><center>'''Proximal Tubule'''</center></TD> |
− | <TD | + | <TD BGCOLOR="#C1f0f6"><center>'''Loop of Henle'''</center></TD> |
− | <TD | + | <TD BGCOLOR="#C1f0f6"><center>'''Distal Tubule and Collecting Duct'''</center></TD> |
− | <TD | + | <TD BGCOLOR="#C1f0f6"><center>'''Hormonal Influences'''</center></TD> |
</TR> | </TR> | ||
<TR> | <TR> | ||
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<TD> | <TD> | ||
*Passively reabsorbed via diffusion from the thin ascending limb | *Passively reabsorbed via diffusion from the thin ascending limb | ||
− | *Reabsorbed actively in the thick ascending limb via the Sodium/Potassium/2-Chloride | + | *Reabsorbed actively in the thick ascending limb via the Sodium/Potassium/2-Chloride co-transporter |
*It is then cleared from the cell via the sodium/potassium ATPase in the basolateral membrane | *It is then cleared from the cell via the sodium/potassium ATPase in the basolateral membrane | ||
*[[Reabsorption and Secretion Along the Loop of Henle - Anatomy & Physiology#Transport|Link to Article]]</TD> | *[[Reabsorption and Secretion Along the Loop of Henle - Anatomy & Physiology#Transport|Link to Article]]</TD> | ||
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</TR> | </TR> | ||
<TR> | <TR> | ||
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* Potassium mainly moves across the membrane via the paracellular route. | * Potassium mainly moves across the membrane via the paracellular route. | ||
* It is then pumped into the cell in exchange for sodium via the sodium/potassium ATPase in the basolateral membrane | * It is then pumped into the cell in exchange for sodium via the sodium/potassium ATPase in the basolateral membrane | ||
− | * It then leaves the cell using a | + | * It then leaves the cell using a co-transporter with chlorine |
* [[Reabsorption and Secretion Along the Proximal Tubule - Anatomy & Physiology#Potassium|Link to Article]]</TD> | * [[Reabsorption and Secretion Along the Proximal Tubule - Anatomy & Physiology#Potassium|Link to Article]]</TD> | ||
<TD BGCOLOR="#C1f0f6"> | <TD BGCOLOR="#C1f0f6"> | ||
− | *Reabsorbed actively in the thick ascending limb via the Sodium/Potassium/2-Chloride | + | *Reabsorbed actively in the thick ascending limb via the Sodium/Potassium/2-Chloride co-transporter |
*It also enters the cell via the sodium/potassium ATPase in the basolateral membrane | *It also enters the cell via the sodium/potassium ATPase in the basolateral membrane | ||
− | *Potassium from both these sources leaves the cell via a | + | *Potassium from both these sources leaves the cell via a co-transporter with chlorine |
*[[Reabsorption and Secretion Along the Loop of Henle - Anatomy & Physiology#Transport|Link to Article]]</TD> | *[[Reabsorption and Secretion Along the Loop of Henle - Anatomy & Physiology#Transport|Link to Article]]</TD> | ||
− | <TD BGCOLOR="#C1f0f6"> | + | <TD BGCOLOR="#C1f0f6"></TD> |
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</TR> | </TR> | ||
<TR> | <TR> | ||
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*Freely diffuses from the collecting duct into the medullary interstitium | *Freely diffuses from the collecting duct into the medullary interstitium | ||
*[[Reabsorption and Secretion Along the Distal Tubule and Collecting Duct - Anatomy & Physiology#Urea|Link to Article]]</TD> | *[[Reabsorption and Secretion Along the Distal Tubule and Collecting Duct - Anatomy & Physiology#Urea|Link to Article]]</TD> | ||
− | <TD> | + | <TD>ADH makes the collecting duct more permeable to Urea</TD> |
</TR> | </TR> | ||
<TR> | <TR> | ||
− | <TD BGCOLOR="#C1f0f6">''' | + | <TD BGCOLOR="#C1f0f6">'''Water'''</TD> |
− | <TD BGCOLOR="#C1f0f6"> | + | <TD BGCOLOR="#C1f0f6"></TD> |
− | + | <TD BGCOLOR="#C1f0f6"></TD> | |
− | + | <TD BGCOLOR="#C1f0f6"></TD> | |
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</TR> | </TR> | ||
<TR> | <TR> | ||
<TD>'''Glucose'''</TD> | <TD>'''Glucose'''</TD> | ||
<TD> | <TD> | ||
− | *It is reabsorbed using a | + | *It is reabsorbed using a co-transporter with sodium via secondary active transport |
*[[Reabsorption and Secretion Along the Proximal Tubule - Anatomy & Physiology#Glucose|Link to Article]]</TD> | *[[Reabsorption and Secretion Along the Proximal Tubule - Anatomy & Physiology#Glucose|Link to Article]]</TD> | ||
− | <TD | + | <TD>N/A</TD> |
− | <TD | + | <TD>N/A</TD> |
− | <TD | + | <TD>N/A</TD> |
</TR> | </TR> | ||
<TR> | <TR> | ||
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*Is reabsorbed via endocytosis | *Is reabsorbed via endocytosis | ||
*[[Reabsorption and Secretion Along the Proximal Tubule - Anatomy & Physiology#Protein|Link to Article]]</TD> | *[[Reabsorption and Secretion Along the Proximal Tubule - Anatomy & Physiology#Protein|Link to Article]]</TD> | ||
− | <TD BGCOLOR="#C1f0f6" | + | <TD BGCOLOR="#C1f0f6">N/A</TD> |
− | <TD BGCOLOR="#C1f0f6" | + | <TD BGCOLOR="#C1f0f6">N/A</TD> |
− | <TD BGCOLOR="#C1f0f6" | + | <TD BGCOLOR="#C1f0f6">N/A</TD> |
</TR> | </TR> | ||
<TR> | <TR> | ||
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* Calcium can passively move paracellulary into the vasa recta | * Calcium can passively move paracellulary into the vasa recta | ||
*[[Reabsorption and Secretion Along the Loop of Henle - Anatomy & Physiology#Transport|Link to Article]]</TD> | *[[Reabsorption and Secretion Along the Loop of Henle - Anatomy & Physiology#Transport|Link to Article]]</TD> | ||
− | <TD> | + | <TD></TD> |
− | <TD> | + | <TD></TD> |
</TR> | </TR> | ||
<TR> | <TR> | ||
− | <TD BGCOLOR="#C1f0f6">''' | + | <TD BGCOLOR="#C1f0f6">'''H<sup>+</sup> and HCO<sub>3</sub><sup>-</sup>'''</TD> |
<TD BGCOLOR="#C1f0f6"> | <TD BGCOLOR="#C1f0f6"> | ||
+ | * The secretion of H<sup>+</sup> in this section of the nephron is mainly a result of the Na<sup>+</sup>/H<sup>+</sup> antiporter in the apical membrane using secondary active transport. | ||
+ | *HCO<sub>3</sub><sup>-</sup> is reabsorbed here in a different way to other substances. The presence of hydrogen in the lumen causes some amount of it to dissociate to carbon dioxide and water via the enzyme carbonic anhydrase. These enter the epitehlial cells where they are reformed using the same enzyme. The HCO<sub>3</sub><sup>-</sup> then leaves the cell using the basolateral 3HCO<sub>3</sub><sup>-</sup>/Na<sup>+</sup> co-transporter. | ||
+ | *[[Acid Base Balance By The Kidney - Anatomy & Physiology#Secretion of H+ and the Reabsorption of HCO3- in the Proximal Tubule|Link to Article]]</TD> | ||
+ | <TD BGCOLOR="#C1f0f6"></TD> | ||
+ | <TD BGCOLOR="#C1f0f6"></TD> | ||
+ | <TD BGCOLOR="#C1f0f6"></TD> | ||
+ | </TR> | ||
+ | <TR> | ||
+ | <TD>'''Organic Acids and Bases'''</TD> | ||
+ | <TD> | ||
* Secreted here via primary active secretion. | * Secreted here via primary active secretion. | ||
*[[Reabsorption and Secretion Along the Proximal Tubule - Anatomy & Physiology#Primary Active Secretion - Organic Acids and Bases|Link to Article]]</TD> | *[[Reabsorption and Secretion Along the Proximal Tubule - Anatomy & Physiology#Primary Active Secretion - Organic Acids and Bases|Link to Article]]</TD> | ||
− | <TD | + | <TD>N/A</TD> |
− | <TD | + | <TD>N/A</TD> |
− | <TD | + | <TD>N/A</TD> |
</TR> | </TR> | ||
</TABLE> | </TABLE> | ||
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Revision as of 13:51, 4 September 2008
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Sodium |
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Potassium |
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Urea |
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ADH makes the collecting duct more permeable to Urea |
Water | ||||
Glucose |
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N/A | N/A | N/A |
Protein |
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N/A | N/A | N/A |
Calcium |
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H+ and HCO3- |
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Organic Acids and Bases |
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N/A | N/A | N/A |