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.
Some sources define constipation as having three or fewer bowel movements per week, but that is a generalization. If you normally have 2 or 3 bowel movements per day, 3 per week would indicate constipation. If three movements per week is normal for you, though, then there is no reason for concern. Constipation becomes more severe the longer it lasts.