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 ?
Thiazide diuretic use may also predispose to the development of this condition by enhancing renal tubule calcium absorption and by promoting volume depletion and alkalosis.
Weaker staining has also been observed in other normal human tissues, including renal tubules, exocrine glands and ducts in the pancreas, follicular epithelium in the thyroid, mammary gland ducts, and parietal cells in the stomach, as well as other neoplasms, such as large cell carcinoma of the lung and renal cell, pancreatic, breast, thyroid, colorectal, and ovarian carcinomas.
Once filtration occurs, a drug may stay in the filtrate, to be excreted in the urine, or it may be reabsorbed from the filtrate as it moves along the renal tubules.
Pathological expression of renin and angiotensin II in renal tubule following subtotal nephrectomy: Implications for the pathogenesis of tubulointerstitial fibrosis.
Renal cell carcinoma accounts for about 3% of adult malignancies arising from the proximal renal tubules.
Calcification of the soft tissues of the heart, blood vessels, renal tubules, and lungs is a defining characteristic of vitamin D toxicity (hypervitaminosis D).
5) When blood glucose levels rise above this point, the ability of the renal tubules to reabsorb glucose is overwhelmed resulting in osmotic diuresis that leads to dehydration.
Increased levels of these two markers in renal tubules usually indicate uptake and transport problems in the tubules.
As crystals move through the renal tubules, rapid aggregation generates a crystal large enough to occlude the tubular lumen and to be retained at the level of the papillary collecting duct.
Normally, NE released by the sympathetic nerve endings causes salt and water reabsorption through a direct action on the renal tubules, reduction in RBF via activation of postsynaptic [[alpha].
The researchers identified a protein from the renal tubules of Aedes aegypti mosquitoes, which spread the dengue fever causing virus.

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