Multiple choice

Which of the following does not cause vasoconstriction in the kidneys?

  1. Angiotensin II

  2. Vasopressin

  3. Epinephrine

  4. Non-steroidal anti-inflammatory drugs

  5. Prostaglandins
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Non-steroidal anti-inflammatory drugs block prostaglandin synthesis and so remove this tonic dilatation. The result is renal vasoconstriction. Prostaglandins are powerful vasodilators and there is a normal tonic level of vasodilation in the renal blood vessels, which is caused by prostaglandins.

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