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Which hormone is responsible for vasodilation?Question 19Answera.Angiotensin IIb.Antidiuretic hormonec.Atrial natriuretic peptided.Norepinephrinee.Vasopressin

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Solution

Answer to the Question

Among the options provided, the hormone responsible for vasodilation is:

c. Atrial natriuretic peptide (ANP)

Explanation

Atrial natriuretic peptide is a hormone produced by the heart's atria. It promotes vasodilation, which helps to reduce blood pressure by relaxing the blood vessels. This is in contrast to other hormones listed:

  1. Angiotensin II - primarily causes vasoconstriction.
  2. Antidiuretic hormone (ADH) - primarily helps in water retention and can cause vasoconstriction in certain contexts.
  3. Norepinephrine - primarily causes vasoconstriction and increases blood pressure.
  4. Vasopressin - also known as ADH, induces water retention and can cause vasoconstriction.

Thus, the correct answer is Atrial natriuretic peptide, due to its role in promoting the widening of blood vessels.

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