renal tubule

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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

Etymology: L, ren, kidney, tubulus, small tube
the part of the kidney's nephron that leads from the glomerulus to the collecting tubules. It consists of a looping segment and two convoluted sections. These canals resorb selected materials back into the blood and secrete, collect, and conduct 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 ?
Other effects include tubular dysfunction (membrane permeability), hypokalaemia, renal tubular acidosis (bicarbonate wasting type 1/distal), diabetes insipidus, and hypomagnesaemia.
This report describes the clinical and pathologic findings of an unusual bilateral renal tubular neoplasm in an adult male channel-billed toucan.
FGF23 inhibits renal tubular phosphate reabsorption and renal conversion of 25-hydroxyvitamin D to 1,25-dihydroxyvitamin D, leading to the biochemical and skeletal abnormalities.
Renal tubular acidosis and osteopetrosis with carbonic anhydrase II deficiency: pathogenesis of impaired acidification.
Renal tubular toxicity induced by CsA can be acute with the appearance of oligoanuria, presence of atrophic tubules, and edema.
Police are hunting the crooks that stole renal tubular acidosis sufferer Stephen Carr's pride and joy in daylit West Denton.
In contrast, clinical manifestations that primarily present as the coexistence of distal renal tubular acidosis and central pontine myelinolysis (CPM) are very rare in pSS.
In studies performed in preterm and term neonates, urinary NAG excretion has been reported to be one of the important markers to show renal tubular damage (20,21,22,23,24).
Nocturnal polyuria may occur secondary to any renal tubular dysfunction, third space fluid sequestration, obstructive sleep apnea, circadian impairment or as a side effect of drugs (e.
At therapeutic dosage levels, the antibiotic can crystallize with calcium in the urine and adhere to the surface of renal tubular cells, which then form into stones that obstruct the ureters.
The clinical onset is often insidious, and the proximal tubular damage caused by the crystals typically manifests with features of Fanconi syndrome, including normoglycemic glycosuria, aminoaciduria, hyperuricosuria, hyperphosphaturia, and type II renal tubular acidosis.