-At which nephron site does the amount of $\mathrm{K}^{+}$in tubular fluid exceed the amount of filtered $\mathrm{K}^{+}$in a person on a high- $\mathrm{K}^{+}$diet?

Question

Quizplus · Accepted Answer

[ $B$ B 4]. $\mathrm{K}^{+}$is secreted by the late distal tubule and collecting ducts. Because this secretion is affected by dietary $\mathrm{K}^{+}$, a person who is on a high- $\mathrm{K}^{+}$diet can secrete more $\mathrm{K}^{+}$into the urine than was originally filtered. At all of the other nephron sites, the amount of $\mathrm{K}^{+}$in the tubular fluid is either equal to the amount filtered (site $A$ ) or less than the amount filtered (because $\mathrm{K}^{+}$is reabsorbed in the proximal tubule and the loop of Henle).

-At Which Nephron Site Does the Amount Of K+\mathrm{K}^{+}K+ In Tubular Fluid Exceed the Amount of Filtered

-At Which Nephron Site Does the Amount Of $\mathrm{K}^{+}$ In Tubular Fluid Exceed the Amount of Filtered