Learn about the sympathetic nervous system, one of the three divisions of the autonomic nervous system that regulates the fight or flight response. Find out its structure, organization, functions, and disorders. Learn about the sympathetic nervous system, a network of nerves that controls your "fight-or-flight" response. Find out how it works, where it is located, what conditions can affect it and how to treat them. · The sympathetic nervous system (SNS) is one of two main divisions of the autonomic nervous system, which controls involuntary body processes like heart rate and digestion. The SNS activates what is often termed the “ fight or flight ” response. · What is the sympathetic nervous system (SNS)? Your sympathetic nervous system is a network of nerves under involuntary control associated with your “ fight or flight ” response. It helps mobilize... · Sympathetic nervous system, division of the nervous system that produces localized adjustments (such as sweating as a response to an increase in temperature) and reflex adjustments of the cardiovascular system. · The sympathetic nervous system is part of the autonomic nervous system that controls your fight or flight response. Learn how it works, where it's located, and what diseases can affect it. · The sympathetic autonomic nervoussystem (SANS) is one of the two divisions of the autonomic nervous system (ANS), along with the parasympathetic nervous system (PANS), These systems primarily work unconsciously in opposite ways to regulate many functions and parts of the body. · The sympathetic nervous system is part of the autonomic nervous system that controls your fight or flight response. Learn how it works, where it's located, and what diseases can affect it. · The sympathetic autonomic nervoussystem (SANS) is one of the two divisions of the autonomic nervous system (ANS), along with the parasympathetic nervous system (PANS), These systems primarily work unconsciously in opposite ways to regulate many functions and parts of the body.