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.
If symptoms like those go on for three months or longer, and there is no obvious cause, doctors call it âchronic constipation.â That can lead to hemorrhoids, painful tears in the lining around the anus (anal fissures), or stools that become so hard that they will not pass on their own (fecal impaction).