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.
More specifically, constipation may involve pain during the passage of a bowel movement, the inability to pass a bowel movement after straining or pushing for more than 10 minutes, or no bowel movements after more than 3 days. See also: sub-topics.