The thick segment of the ascending limb of the nephron loop is permeable to
a. water but not urea
b. sodium ions but not potassium ions
c. sodium and potassium ions but not chloride ions
d. water but not salts
e. sodium, potassium, and chloride ions but not water

The answer is E. Sodium, potassium, and chloride ions but not water.

Explanation:

The thick segment of the ascending limb of the nephron loop is permeable to: sodium, potassium and chloride ions, but not water.

In this ascending branch are specific ionic channels for each of them. This ascending area of the henle handle is continued with the distal contoured tube where reabsorption and ion secretion occur again to further converate the urine.

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Explanation: