Multiple Choice
Which of the following mechanisms is used to regulate blood pressure in the closed circulatory system of vertebrates?
A) Changing the force of heart contraction
B) Constricting and relaxing sphincters in the walls of arterioles
C) Adjusting the volume of blood contained in the veins
D) All of the above
E) None of the above
Correct Answer:
Verified
Correct Answer:
Verified
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