When vasoconstriction is needed to raise BP, the arteries receive:
A)fewer sympathetic impulses
B)more sympathetic impulses
C)more parasympathetic impulses
D)fewer parasympathetic impulses

Question

Quizplus · Accepted Answer

Vasoconstriction is a sympathetic nervous system response, so more sympathetic impulses would cause vasoconstriction and raise blood pressure. Fewer sympathetic impulses would have the opposite effect and lower blood pressure. Parasympathetic impulses generally have the opposite effect of sympathetic impulses, so more parasympathetic impulses would also lower blood pressure.

When Vasoconstriction Is Needed to Raise BP, the Arteries Receive