You are sitting in a public place next to a new acquaintance to whom you are attracted. You feel this person’s hand touch yours. Your heart beats faster, and you feel "butterflies" in your stomach. Your increased heart rate and stomach contractions were initiated by what division of the nervous system?
The Autonomic nervous system has to do with the "fight or flight" and "rest and digest" branches. It has to do with increased heart rate, butterflies in the stomach, etc.