1 the brain and spinal cord
The brain will control movement, processes information, and sends out messages to instruct different parts of the body.
2 Nerves
It helps all parts of the body connect with each other, they send messages through electrical and chemical means to the brain which sends that information to the body. Nerves also react to different changes both inside and out of the body, and can send signals to your brain to say that something is wrong (that’s why you feel pain).
Hope this helps!
