Divisions of the Nervous System
Think of your nervous system as having two main departments that work together like a perfectly coordinated team. The central nervous system (CNS) is your body's command centre, made up of your brain and spinal cord - this is where all the important decisions get made.
The peripheral nervous system (PNS) acts like a massive network of cables connecting your CNS to the rest of your body. It's split into two branches: the somatic nervous system (SNS) and the autonomic nervous system (ANS).
Your somatic nervous system handles everything you consciously control, like moving your arms or walking. It uses sensory neurons to send information from your sense organs to your CNS, then motor neurons carry commands back to your skeletal muscles.
The autonomic nervous system runs all the stuff you don't think about - like your heartbeat and breathing. It's further divided into sympathetic and parasympathetic systems that work like an accelerator and brake pedal for your body's automatic functions.
Remember: CNS = brain + spinal cord (the bosses), PNS = everything else (the messengers)
