Assume you have a phobia of snakes. You are on a hike when you encounter a large, venomous appearing snake. What division of the autonomic nervous system will kick in and how will your heart, lungs and GI system be impacted?
Part 2: The snake stares you down and then slithers off leaving you alone. The threat is over. What division of the autonomic nervous system now takes over and what impact does it have on your heart, lungs, and GI system.
