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.
Complications of severe constipation. The normal length of time between bowel movements can vary widely from person to person. Some people have them up to three times a day. Others may have them only once or twice a week. However, going longer than three or more days without one is simply too long.