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.
In most of the cases, constipation will end within a few days if you take proper steps to treat the problem. It all depends on the cause of your constipation and how you treat it. The most important thing is to be proactive and follow the steps correctly.