Jackie is running down a trail to prepare for a half-marathon when she notices something that looks like a log in her path. As she gets closer, she sees the log move and realizes it's à large snake. She makes the split decision to veer away from it. Which of the following systems helped Jackie avoid the snake?A.parasympathetic nervous systemB.sympathetic nervous systemC.somatic nervous systemD.electrochemical system
Considering that Jackie noticed the snake, and inmediatly he began to run away of it, we could say that the nervous system implied in that almost instant reaction is the sympathetic nervous system, the B answer option.