collecting duct
collecting tubule

Water is lost as a result of more sodium reaching the collecting ducts.

As a result, cortisol levels are high within the collecting duct of the kidney.

These transcribed channels allow water into the collecting duct cells.

Many sources include the connecting tubule as part of the collecting duct system.

For the collecting ducts, it is the principal cell.

Both hormones exert their effects principally on the collecting ducts.

It also contains blood vessels and cortical collecting duct.

The collecting duct system is the final component of the kidney to influence the body's electrolyte and fluid balance.

The principal cells are the sodium-transporting cells in the collecting duct system.

This consists of two or more protonephridia, with those on each side of the body opening into a collecting duct.

For example it is found in the cortical collecting duct lining cells in the kidney.

The collecting duct system begins in the renal cortex and extends deep into the medulla.

A kidney collecting duct cell can be of two different cell types:

Each lobule contains a single branch of the ureter in its centre, into which the collecting ducts empty.

At times of extreme dehydration, over 24% of the filtered water may be reabsorbed in the collecting duct system.

In addition to these blood vessels, the microcirculation also includes lymphatic capillaries and collecting ducts.

This increases the osmolarity in the lumen, causing less water to be reabsorbed by the collecting ducts.

Even today, though the collecting ducts are ruined, the bottom of the cistern still has water even at the end of summer.

The metanephric blastema mostly develops into nephrons, but can also form parts of the collecting duct system.

It is notable that glomeruli and collecting ducts are distinguished from other segments by high number of adherent cells.

These last join and establish communications with the collecting duct system derived from the ultimate ramifications of the ureteric bud.

The wide variation in water reabsorption levels for the collecting duct system reflects its dependence on hormonal activation.

Additionally, it increases the secretion of potassium in the distal tubule and collecting ducts.

Desmopressin binds to V2 receptors in renal collecting ducts, increasing water reabsorption.

Blood cultures are frequently positive, but urine culture may be negative, because infected kidney cysts do not communicate directly with the collecting duct system.

Increased aldosterone levels results in salt and water absorption in the distal collecting tubule.

Potassium is secreted twice and reabsorbed three times before the urine reaches the collecting tubules.

In most cases, the kidney is divided into two parts, an upper and lower lobe, with some overlap due to intermingling of collecting tubules.

Physiologically, this works by reducing the responsiveness of the collecting tubule cells to ADH.

The initial collecting tubule is a segment with a constitution similar as the collecting duct, but before the convergence with other tubules.

A series of glands lie on the outer surface of the intestine, opening through collecting tubules into the stomach, although their precise function is unclear.

Triamterene directly blocks the epithelial sodium channel (ENaC) on the lumen side of the kidney collecting tubule.

Connecting tubules from several adjacent nephrons merge to form cortical collecting tubules, and these may join to form cortical collecting ducts.

The "cortical collecting ducts" receive filtrate from multiple initial collecting tubules and descend into the renal medulla to form medullary collecting ducts.

These structures include the vasa rectae (both spuria and vera), the venulae rectae, the medullary capillary plexus, the loop of Henle, and the collecting tubule.

Aldosterone initially results in an increase in Na reabsorption in these patients through stimulation of ENac channels in principal cells of the renal collecting tubules.

Studies have shown that the cul5 protein is expressed at its highest levels in heart and skeletal tissue, and is specifically expressed in vascular endothelium and renal collecting tubules.

The base of each pyramid originates at the corticomedullary border and the apex terminates in a papilla, which lies within a minor calyx, made of parallel bundles of urine collecting tubules.

Aldosterone stimulates secretion of H in exchange for Na in the intercalated cells of the cortical collecting tubules, regulating plasma bicarbonate (HCO) levels and its acid/base balance.

Low flow, as in urinary tract obstruction, allows more time for reabsorption and is often associated with increases in antidiuretic hormone (ADH), which increases the permeability of the terminal collecting tubule to urea.

In general the renal medulla is under greater oxygen tension and more prone to ischemic injury, especially at the level of the proximal collecting tubule, leading to its preferential damage in a sudden drop in perfusion.

These proteins form water- specific channels that provide the plasma membranes of red cells and kidney prox imal and collecting tubules with high permeability to water, thereby permitting water to move in the direction of an osmotic gradient.

On its own, spironolactone is only a weak diuretic because its effects target the distal nephron (collecting tubule), where urine volume can only be slightly modified; but it can be combined with other diuretics to increase efficacy.

DOC stimulates the collecting tubules (the tubules which branch together to feed the bladder) to continue to excrete potassium in much the same way that aldosterone does but not like aldosterone in the end of the looped tubules (distal).

Chronic lithium ingestion - appears to affect the tubules by entering the collecting tubule cells through sodium channels, accumulating and interfering with the normal response to ADH (ADH Resistance) in a mechanism that is not yet fully understood.

For diabetes insipidus, the effect of thiazide diuretics is presumably mediated by a hypovolemia-induced increase in proximal sodium and water reabsorption, thereby diminishing water delivery to the ADH-sensitive sites in the collecting tubules and reducing the urine output.

Lesions comprised perineuronal vacuolation in the gray matter of the spinal cord at the sacral region, centrilobular hepatocellular necrosis, degeneration of the renal proximal convoluted and collecting tubules, serous atrophy of the cardiac fat and renal pelvis and straw-coloured fluid in serious cavities.