Which of the following is true regarding urea?: (A) Transpoed through aquaporins, (B) Re-absorbed in proximal tubule, (C) No role in concentration of urine, (D) Resorption is independent of ADH
Answer is B. Urea Urea transpoed UT1, UT2 {UT- urea transpoer} Urea transpo is under the influence of ADH Contributes to 40 % of interstitial osmolarity Recycled & excreted in a concentrated manner. Urea reabsorption: - Urea is freely filtered 50 % of urea is reabsorbed in the proximal tubule with the reabsorption of water (solvent drag) Its secreted in thin ascending limb of LOH, In the CD, urea is reabsorbed together with water.