A) Increase of cardiac output
B) Constriction of blood vessel
C) Activation of parasympathetic nerve
D) Increase of blood volume
Correct Answer: A
Solution :
Blood pressure is the pressure exerted by circulating blood upon the walls of blood vessels. High blood pressure (hypertension) is dangerous because it makes the heart work harder to pump blood to the body. It contributes to the increase in total cardiac output, constriction or hardening of arteries (blood vessel), increase in the blood volume, etc.
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