Multiple choice

Which of the following statements is true regarding sodium ions absorption in the kidneys?

  1. The concentration of sodium ions is generally higher inside the cells than outside .

  2. The amount of sodium in the initial filtrate is much less than that in the plasma.

  3. Most sodium is reabsorbed in the distal tubule.

  4. There is no active transport of sodium.

  5. The diuretic drug furosemide blocks the Na-K-2Cl channel in the loop of Henle.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Diuretics such as furosemide inhibits sodium reabsorption in the loop of Henle by blocking the Na-K-2Cl channel in the loop of Henle. Drugs such as the thiazides oppose sodium reabsorption in the distal tubule.

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