Best Answer: The peripheral nervous system, which it is a component of. The sympathetic and parasympathetic systems are components of the autonomic nervous system.
Also, make the call if: 1  Constipation is a new problem for you. 2  You have blood in your stool. 3  You are losing weight even though you are not dieting.  You have severe pain with bowel 1  movements. Your constipation has lasted more than 2 weeks.  You have pencil-thin stools.
Call your doctor if you: 1  Are constipated and never had this condition before. 2  Have constipation that lasts longer than 2-3 weeks. 3  Have a painful or swollen abdominal.  Have nausea or 1  vomiting. Have signs of an infections, such as fever or chills.  Have pain or burning in anal area with or without bowel movement.