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.
The third stage is called the acute stage (you ARE sick), which usually lasts from 7-20 days. Now you have the symptoms of mono like sore throat, fever, swollen glands, etc. The final stage, the convalescent period, can last from 2-6 weeks to up to 3 months. During this time you'll feel much better, but are still weak and tired.