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Statement A: Tubular secretion play an important role in maintaining ionic balance in body.
Statement B: Excess potassium is secreted into filtrate and in exchange sodium is reabsorbed.
Both statements are correct and statement B is correct explanation for statement A
Both statements are correct and statement B is not a correct explanation for statement A
Statement A is correct and statement B is incorrect
Statement A is incorrect and statement B is correct
Answers (1)
During urine formation, the tubular cells secrete substances like H+,K+ and ammonia into the filtrate. Tubular secretion is also an important step in urine formation as it helps in the maintenance of ionic and acid base balance of body fluids.
Hydrogen is secreted in both PCT & DCT .
potassium is reabsorbed from PCT , but is secreted into filtrate in DCT.
Ammonia is secreted into filtrate in PCT.
Potassium is secreted in tubules and,in exchange sodium is reabsorbed. Excess Secretion of K+ and defective reabsorption of Na+ will cause a condition called hyperkalemia.
hence option C is correct.
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