Elizabeth takes a prescription drug that dilates her arterioles.What does this do to her blood pressure? Why?
A) It falls because this increases the cross-sectional area of the vessels.
B) It rises because this increases the cross-sectional area of the vessels.
C) It falls because this decreases the cross-sectional area of the vessels.
D) It rises because this decreases the cross-sectional area of the vessels.
E) It stays the same because venules,not arterioles,control blood pressurE.
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