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.
There are some important things which wonât let you think that how long does the constipation last, such as: Eating fiber. Drinking plenty of fluid. And last but not the least, regular exercise. How long does the constipation last varies from a person to person.No matter what sort of your immune system is or what is the level of your internal situation, it highly depends on your eating habits, lifestyle and other external factors which have a direct effect on your body (like stress).part from how long does the constipation last an individual should see the causes behind severity of constipation. Although itâs a bit difficult to find out the accurate causes, but still there are plenty of reasons behind constipation, like: