The primary mechanism responsible for urine concentration in the kidney is the:
Show answer and explanation
Correct answer: Countercurrent multiplication system
Countercurrent multiplication in the loop of Henle creates a hyperosmotic medullary interstitium. This gradient allows water reabsorption and urine concentration.
Keep practicing
More Urine Concentration and Dilution questions
- Which segment of the nephron is impermeable to water but actively transports sodium chloride?
- The descending limb of the loop of Henle is characterized by:
- Antidiuretic hormone (ADH) primarily increases water permeability in the:
- In the absence of ADH, the kidney produces urine that is:
- Which substance contributes significantly to the medullary osmotic gradient?
- Urea recycling mainly occurs between the: