What happens to the fluid as it travels through the loop of Henle?

In summary, the loop of Henle is surrounded by tissue fluid which has a high concentration of ions in it. This causes water to move out of the descending limb by osmosis. This produces a more concentrated filtrate because of this, ions move out of the loop in the thin ascending limb.

Where does tubular fluid become urine?

Tubular fluid is the fluid in the tubules of the kidney. It starts as a renal ultrafiltrate in the glomerulus, changes composition through the nephron, and ends up as urine leaving through the ureters.

Does tubular reabsorption occur in loop of Henle?

Reabsorption occurs in the proximal convoluted tubule, loop of Henle, distal convoluted tubule, and to a lesser degree, the collecting ducts. Various portions of the nephron differ in their capacity to reabsorb water and specific solutes.

Is tubular fluid isotonic as it enters the loop of Henle?

The fluid entering the loop of Henle is isotonic to plasma, but, after traversing the loop, fluid entering the distal tubule is hypotonic to plasma, i.e. the tubular fluid has been diluted during its passage around the loop of Henle.

How is water reabsorbed in the loop of Henle?

Water present in the filtrate in the papillary duct flows through aquaporin channels out of the duct, moving passively down its concentration gradient. This process reabsorbs water and creates a concentrated urine for excretion.

What happens tubular secretion?

Tubular secretion involves the removal of toxic substances from the blood capillaries and tissue and their active secretion into the nephron. Metabolic wastes such as urea, uric acid, ammonia and hydrogen ions are secreted into the fluid within the nephron.

What happens during tubular secretion?

Tubular secretion is the transfer of materials from peritubular capillaries to the renal tubular lumen; it is the opposite process of reabsorption. This secretion is caused mainly by active transport and passive diffusion. Usually only a few substances are secreted, and are typically waste products.

What happens in tubular reabsorption?

Tubular reabsorption is the process that moves solutes and water out of the filtrate and back into your bloodstream. This process is known as reabsorption, because this is the second time they have been absorbed; the first time being when they were absorbed into the bloodstream from the digestive tract after a meal.

What is secreted in the loop of Henle?

loop of Henle, long U-shaped portion of the tubule that conducts urine within each nephron of the kidney of reptiles, birds, and mammals. The principal function of the loop of Henle is in the recovery of water and sodium chloride from urine.

What does the loop of Henle do?

The primary function of the loops of Henle and the thick ascending limb of the distal tubule is the concentration of urine utilizing a principle called ‘countercurrent multiplication. ‘ The medulla possesses a gradient of urea and salt with increasing concentrations of these solutes closer to the papillae.