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.
Not only does constipation make you feel bloated, headachy, and irritable, but relieving constipation -- especially long-term or chronic constipation-- is time consuming and expensive. Each year in the U.S., chronic constipation leads to around 2.5 million doctor visits -- and medication costs of many hundreds of millions of dollars.