Nervous System:
It is made up of the brain, the spinal cord and nerves.
It carries signal to and from
the brain to all parts of the body. It controls the activity of the involuntary muscles e.g. the blood vessels.
Motor Neurons:
carry messages from the brain to different parts of the body.
Sensory
Neurons: carry messages from the parts
of the body to the brain.
Unconsciousness:
It is an interruption to the brains normal
activity.
Levels of Responsiveness:
A -
Alert
V - Voice
P - Pain
U - Unresponsive