In a hypothetical experiment, the blood flow between two dogs is joined and one dog is stressed so that its heart rate goes up rapidly. What will happen to the heart rate of the second dog?
a) It will remain calm because the heart rate is determined intrinsically in each heart.
b) Heart rate will go up due to an increase in epinephrine and norepinephrine in the blood.
c) Heart rate will go up due to a sympathetic stimulation via the blood.
d) It will remain calm because there is no connection of the dogs' sympathetic nervous systems.
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THis is a weird question. d is the answer,and you ought to know why before your next test.
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