Tubular fluid: Difference between revisions
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Revision as of 17:08, 20 August 2012
Template:Search infobox Steven C. Campbell, M.D., Ph.D.
Overview
Tubular fluid is the fluid in the tubules of the kidney. It starts as a renal ultrafiltrate in the glomerulus, changes composition through the nephron, and ends up as urine leaving through the ureters.
Composition table
The composition of tubular fluid changes throughout the nephron, from the proximal tubule to the collecting duct:
| Substance | proximal tubule | loop of Henle | Distal convoluted tubule | Collecting duct system | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| S1 | S2 | S3 | descending limb | thin ascending limb | thick ascending limb | connecting tubule | initial collecting tubule | cortical collecting ducts | medullary collecting ducts | ||
| Na+ | 142[1] | 142[1] | 100[1] | 70[1] | 40[1] | ||||||