Renal Tubules

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Renal Tubules

 

(1) In some invertebrates, that part of the excretory organs, or nephridia, consisting of coiled tubules. (2) In vertebrates (including man), the renal tubules constitute a large part of the nephrons of the pronephroi, the mesonephros, and the metanephros. When ciliated funnels are present (in some adult Selachii and amphibians), the renal tubules open into the coelom. When there are no funnels (in the postembryonic period of all other vertebrates), they terminate blindly. At the opposite end, the renal tubules empty into the ureters through the collecting tubules.

References in periodicals archive ?
It inhibits urate reabsorption in the proximal convoluted tubule.
The diameter of the proximal convoluted tubule and its opening, size of epithelian cell and its nuclear have no significant changes comparing to the control (see Table 1).
Histopathological examination revealed infiltration of the lymphocytes in the interstitial spaces, glomerular hypertrophy, basement membrane thickening and tubular necrosis with loss of their brush border in some of the proximal convoluted tubules in diabetic rats.
Renal meronts and gametocytes were confined to the distal convoluted tubules and collecting ducts, and were associated with renal tubular necrosis and tubular obstruction.
CaSRs are also present on the luminal membrane of the distal convoluted tubules, and activation of these receptors (by high renal tubule calcium concentrations) increases calcium reabsorption via TRVP5 channels (10).
4E and F), specifically in the epithelial cells from convoluted tubules distant to the surgical scar, suggesting higher regenerative activity in the kidney from treated animals.
Potassium is then secreted into the urinary filtrate in the distal convoluted tubules (DCT).
In the kidney, the hemoglobin is either excreted by or reabsorbed in the proximal convoluted tubules (which are in the renal cortex) and stored as hemosiderin and ferritin.