Multiple choice

Vasodilators open (dilate) the blood vessels. Which among the following is a vasodilator?

  1. Antidiuretic hormone

  2. Epinephrine and norepinephrine

  3. Atrial natriuretic peptide

  4. Angiotensin II

  5. Nicotine
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Atrial natriuretic peptide (ANP), a hormone secreted by the atria of the heart, lowers blood pressure by causing vasodilation and by stimulating the kidneys to excrete more water and Na+(lowering blood pressure by reducing blood volume).

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