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.
ANY short-term changes are normal, but bowel changes that last for four to six weeks could mean that something in your bowel is compromising its proper absorption function and you should go to the doctor. CONSTIPATION might occur if something is blocking the progress of the bowel movement through the gut.