Basically,what occurs in the countercurrent multiplier process?
A)Sodium is pumped into the blood while potassium is actively transported out of the blood back into the tissues.
B)A higher sodium concentration is produced in the kidney medulla tissue that osmotically draws out water,reducing it within the tubules and the urine.
C)Glucose and sodium are cotransported from urine back into blood.
D)Creatinine is actively transported out of the blood into urine.
E)Uric acid is excreted into the kidney tubules while urea is reabsorbed in the loops of Henle.

Question

Quizplus · Accepted Answer

The countercurrent multiplier process refers to the mechanism by which the kidney is able to produce a concentration gradient of sodium in the medulla, which in turn allows for water reabsorption and concentration of urine in the loop of Henle. Specifically, the ascending limb of the loop of Henle actively transports sodium out of the tubule into the interstitial fluid, creating a gradient that reabsorbs water from the descending limb. This process occurs in a counter-current fashion, with the flow of fluid in opposite directions, hence the name "countercurrent." As a result, a higher concentration of sodium is produced in the medulla tissue, which draws out water from the nephron and concentrates urine in the tubule.

Basically,what Occurs in the Countercurrent Multiplier Process