What is the function of Distal Convoluted Tubule (DCT) in urine formation?

What is the function of Distal Convoluted Tubule (DCT) in urine formation?
  1. Reabsorption of essential nutrients
  2. Maintenance of osmolarity of medullary interstitial fluid
  3. Conditional reabsorption of Na⁺ and water
  4. Maintenance of pH and sodium-potassium balance in blood

Solution

The DCT performs conditional reabsorption of Na⁺ and water and is also capable of reabsorbing HCO₃⁻ and selectively secreting hydrogen and potassium ions and NH₃ to maintain the pH and sodium-potassium balance in blooD)

Asked in: NCERT

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