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Part A Which of the following is not expected to dilate the arterioles leading into the capillary beds? Local application of
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Answer #1

Ans: Local application of epinephrine

This is because application of hydrochloric acid, histamine and heat would cause dilation of arterioles an blood capillaries since they are all vasodilators i.e they dilate the blood vessels and arterioles which results in swelling. Epinephrine, on the other hand, acts as vasoconstrictor i.e it constricts the arterioles and blood vessels. Therefore, application of epinephrine is not expected to dilate the arterioles.

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