what is not reabsorbed in the proximal convoluted tubule?
14052
Sodium is actively pumped out, while potassium and chloride diffuse down their electrochemical gradients through channels in the tubule wall and into the bloodstream. The walls of the thick ascending limb are impermeable to water, so in this section of the nephron water is not reabsorbed along with sodium.
210083
Juxtaglomerular Apparatus. The juxtaglomerular apparatus is a specialized structure formed by the distal convoluted tubule and the glomerular afferent arteriole. It is located near the vascular pole of the glomerulus and its main function is to regulate blood pressure and the filtration rate of the glomerulus.
397844
['renal corpuscle.', 'proximal convoluted tubule.', 'loop of Henle.', 'distal convoluted tubule.']
42244
The majority of water reabsorption that occurs in the nephron is facilitated by the AQPs. Most of the fluid that is filtered at the glomerulus is then reabsorbed in the proximal tubule and the descending limb of the loop of Henle.
264907
The proximal tubule efficiently regulates the pH of the filtrate by exchanging hydrogen ions in the interstitium for bicarbonate ions in the filtrate; it is also responsible for secreting organic acids, such as creatinine and other bases, into the filtrate.
316502
In renal physiology, reabsorption or tubular reabsorption is the process by which the nephron removes water and solutes from the tubular fluid (pre-urine) and returns them to the circulating blood.
1251009
The substance that remains in the collecting duct of the kidneys following reabsorption is better known as urine. ... Tubular secretion is the transfer of materials from peritubular capillaries to the renal tubular lumen and occurs mainly by active transport and passive diffusion.
297970
The distal tubule — which consists of the distal convoluted tubule, the connecting tubule, and the initial collecting tubule — participates in regulation of Na and K balance. This region contains the principal cells and is sensitive to aldosterone. The distal ends of several tubules empty into the collecting duct.
1001399
Secretion , which occurs in the proximal tubule section of the nephron , is responsible for the transport of certain molecules out of the blood and into the urine. Secreted substances include potassium ions, hydrogen ions, and some xenobiotics .
578456
When the filtrate leaves the Bowman's capsule and enters the proximal convoluted tubule, sodium and chloride ions, as well as amino acids, glucose and vitamins move back into the blood. This occurs by them diffusing from the filtrate into the cells lining the proximal convoluted tubule.
796459
The nephron is the functional unit of the kidney. ... The renal tubule is a long, convoluted structure that emerges from the glomerulus. It can be divided into three parts based on function. The first part is called the proximal convoluted tubule (PCT), due to its proximity to the glomerulus.
796119
As much as 60%–70% of total Na reabsorption takes place along the proximal convoluted tubule (PCT) and proximal straight tubule, and because reabsorption is near isotonic in this part of the nephron, this is also true for the reabsorption of water.
695682
About 99% of the water-like filtrate , small molecules, and lipid-soluble substances , are reabsorbed downstream in the nephron tubule. This means that the amount of urine eliminated is only about one percent of the amount of fluid filtrated through the glomeruli into the renal tubules.
959993
Glucose: Glucose will be present in blood plasma and glomerular filtrate, but not present in urine (normally) This is because the glucose is selectively reabsorbed in the proximal convoluted tubule. It is reabsorbed from the filtrate into the blood by active transport (symport with Na+ ions)
857374
The juxtaglomerular apparatus is a specialized structure formed by the distal convoluted tubule and the glomerular afferent arteriole. It is located near the vascular pole of the glomerulus and its main function is to regulate blood pressure and the filtration rate of the glomerulus.
49629
Reabsorption in the distal tubule and collecting duct: The tubular fluid now enters the distal tubule and collecting duct, or terminal nephron. ... Reabsorption of magnesium differs in that the majority of the reabsorption occurs in the ascending limb of the loop of Henle.
872919
Carbonic anhydrase inhibitors (e.g., acetazolamide) reduce Na+ reabsorption by their effect on carbonic anhydrase. This enzyme is abundant in the proximal tubule and therefore represents the major site of action of these diuretics.