Direct vasodilators lower blood pressure because they:
Select one:
a. increase cardiac output.
Ob. prevent the release of renin.
C.
cause arterioles to relax.
d. prevent the release of norepinephrine.



Answer :

Final answer:

Vasodilators reduce blood pressure by relaxing arterioles, increasing blood flow, and normalizing blood pressure.


Explanation:

Vasodilators lower blood pressure by causing arterioles to relax, leading to a decrease in vascular resistance and increased blood flow, which helps normalize blood pressure.

Nitric oxide is an important vasodilator that signals smooth muscle relaxation in blood vessels, resulting in widened arteries and reduced blood pressure.

Sympathetic stimulation triggers the release of epinephrine and norepinephrine, enhancing cardiac output and vasoconstriction to help return blood pressure to normal levels.


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