Which vessels vasoconstrict in response to epinephrine and norepinephrine? which vessels vasoconstrict in response to epinephrine and norepinephrine? systemic arterioles coronary arterioles capillaries venules?

The answer is capillary venules. The hormones are also used to treat superficial bleeding because the resultant vasoconstriction reduces blood flow in the venules, hence reduce bleeding. The hormones are also used to increase blood pressure and treat anaphylaxis. The hormones induce constriction when bound to alpha adrenergic receptors such as the capillary venules. They cause dilation when bound to beta-adrenergic receptors such as in arteries.