The parasympathetic nervous system is part of the nervous system?

no. it's the part of the nervous system that is not the central nervous system.

False Made up of two major parts, Central nervous system and Peripheral nervous system

Sympathetic Nervous System:If you think of it as "fight or flight" it becomes a lot easier to remember how it works. It increases the heart rate, increases energy production, decreases the GI system...

autonomic nervous system. SNS uses noradrenaline or adrenaline, PSNS uses Acetylcholine (ACh)

Everywhere on you body you've got feeling. So the nervous system extends throughout the entire body. The biggest parts of the nervous system are the brains and the spinal cord.