Question

Which of the following would affect heart rate in a similar way to activation of the parasympathetic ANS? Group of answer choices

a. Norepinephrine antagonists
b. Overexpression of norepinephrine receptors on cardiac muscle
c. Reduce AChR expression on the cardiac muscle
d. Increased nicotinic receptor expression on skeletal muscle Atropine

Answer 1

Norepinephrine antagonists would affect heart rate in a similar way to activation of the parasympathetic ANS.

Answer: Option A

Step-by-step explanation:

Norepinephrine is responsible for increasing the rate of the heart and causes contraction of the muscles. Having an antagonist norepinephrine would act in the opposite way and would decrease the rate of the heart and help relax the body of the human.

It will act in a similar way to activation of parasympathetic ANS which is responsible for the decreasing the heart rate and increasing the digestion at a faster rate. It relaxes the body of the humans.