Nervous system anterior view the nervous system is a network of neurons whose main feature is to generate modulate and transmit information between all the different parts of the human body this property enables many important functions of the nervous system such as regulation of vital body functions heartbeat breathing digestion sensation and body.

The sympathetic nervous system sns is one of the two divisions of the autonomic nervous system ans along with the parasympathetic nervous system pns these systems primarily work unconsciously in opposite ways to regulate many functions and parts of the body colloquially the sns governs the fight or flight response while the pns controls the.