Imagine That You Are Camping in the Woods at Night

Multiple Choice

Imagine that you are camping in the woods at night and after eating your dinner you hear rustling noises and what sounds like growling coming from the trees behind you. You look for your flashlight so you can go investigate and you notice that your heart is beating very quickly. What has likely caused this change?

A) activation of the parasympathetic nervous system that released norepinephrine into your cardiac muscles cells
B) activation of the sympathetic nervous system that released ACh into your cardiac muscles cells
C) activation of the parasympathetic nervous system that released ACh into your cardiac muscles cells
D) activation of the sympathetic nervous system that released norepinephrine into your cardiac muscles cells