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.
The surest sign of constipation is your transit time. Transit time is the time from the completion of a meal until it shows up as waste in your toilet bowl. The ideal transit time is somewhere between 18-24 hours, depending on what you ate and how much you ate.