Question

Basically, what occurs in the countercurrent multiplier process? basically, what occurs in the countercurrent multiplier process? uric acid is excreted into the kidney tubules while urea is reabsorbed in the nephron loop. creatinine is actively transported out of the blood into urine. glucose and sodium are cotransported from urine back into blood. sodium is pumped into the blood while potassium is actively transported out of the blood back into the tissues. a higher sodium concentration is produced in the renal medulla that osmotically draws out water, reducing it within the tubules and the urine.

Answer 1

The answer is the last one. Countercurrent multiplication in the kidneys is the way toward utilizing vitality to create an osmotic slope that empowers you to reabsorb water from the tubular liquid and deliver concentrated pee. It is discovered broadly in nature and particularly in mammalian organs. 
Countercurrent multiplication was initially considered as a system whereby pee is gathered in the nephron. At first, concentrated in the 1950s by Gottschalk and Mylle following Werner Kuhn's hypotheses, this instrument picked up notoriety simply after a progression of confounded micropuncture tests.

Answer 2

I believe the answer is a higher sodium concentration is produced in the kidney medulla tissue that osmotically draws water out, reducing it within the tubules and the urine. 
Countercurrent multiplier in the kidneys is the process of using energy to generate an osmotic gradient that enables the kidney to reabsorb water from the tubular fluid and produce concentrated urine.