renal tubule

(redirected from Kidney tubules)
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tubule

 [too´būl]
a small tube; especially, a minute canal found in various structures or organs of the body. adj., adj tu´bular.
collecting t's the terminal channels of the nephrons, which open on the summits of the renal pyramids in the renal papillae.
convoluted t's channels that follow a tortuous course; there are convoluted renal tubules and convoluted seminiferous tubules.
dentinal t's the tubular structures of the teeth.
galactophorous t's small channels for the passage of milk from the secreting cells in the mammary gland.
Henle's t's the straight ascending and descending portions of a renal tubule forming Henle's loop.
lactiferous t's galactophorous tubules.
mesonephric t's the tubules comprising the mesonephros, or temporary kidney, of amniotes.
metanephric t's the tubules comprising the permanent kidney of amniotes.
renal tubule the minute canals composing the substance of the kidney and secreting, collecting and conducting the urine; in the glomerulus they have a basement membrane and epithelial lining.
seminiferous t's the tubules of the testis, in which spermatozoa develop and through which they leave the gland.
uriniferous t's renal tubules; channels for the passage of urine.

renal tubule

The part of a nephron through which renal filtrate from the renal corpuscle flows and is changed to urine by reabsorption and secretion. The parts, in order, are the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule, and collecting tubule.
See: kidney for illus; nephron
See also: tubule
References in periodicals archive ?
The immunopositive reaction detected sinusoids in the necrotic areas and at the vein center in the liver (5a), the kidney tubules (Figure 5b), the gill filaments and cells in the hyperplasic areas (Figure 5c) and the necrotic of the spleen tissue (Figure 5d).
Reduction in E-cadherin expression indicates phenotype transition from epithelial cells into mesenchymal cells in kidney tubules. (26) Uric acid-induced kidney tubular epithelial cells lose their apical polarity, become elongated, and migrate to the interstitial tissue via destructed tubular basement membrane, leading to the development of tubulointerstitial fibrosis.
Table 2a: Multiple Comparison of Mean Scoring for Histological changes in Fetal Kidney Tubules per 10 Fields among Various Groups according to Tukey Test.
Studies dating back 25 years, however, demonstrate that proton pump inhibitors themselves can induce acute interstitial nephritis, which is a condition in which spaces between the kidney tubules become swollen and interfere with filtration of toxins out of one's blood.
In healthy individuals, glucose is reabsorbed by the kidney tubules and not present in the urine.
TRMP6 messenger ribonucleic acid, which is expressed in intestinal epithelial cells and kidney tubules, has a crucial role for transcellular [Mg.sup.2+] absorption from the intestine and from the distal convoluted tubules.
Meprins are metalloprotease that are abundantly expressed in the brush-border membranes (BBMs) of proximal kidney tubules. Changes in the level of expression and localization of meprins have been associated with the pathology of IR-induced kidney injury in mice and rats [1, 10, 24, 25].
The kidney tubules changes were considerably mild in the G4 group that showed part damaged cell, also show some Alonbebat collecting tubule padded cell with cytoplasm free of Empty looking cytoplasm.
The kidney tubules dilated, and the extent of renal fibrosis worsened gradually.
It also allows for personalised medicine approaches as treatments can be tested using cells obtained from a patient's urine sample, which are grown in the lab to form mini kidney tubules.
Between these two layers is found the Bowman space, which extends to the lumen of kidney tubules. Among the kidney corpuscles is placed the hematopoietic tissue (Figure 6).
Glomeruli of mice fed the acidic diet appeared congested and the kidney tubules were edematus (Fig.