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.
Stomach upset: Heartburn, nausea and stomach pain taper around 2 weeks, constipation may last for up to 4 weeks. Cough/Mucus production: These may persist past 4 weeks, although they often begin to get better in about 2-3 weeks.