Divisions of the nervous system
Autonomic nervous system
The group of nerves in the peripheral nervous system that controls involuntary actions
Somatic nervous system
The group of nerves in the peripheral nervous system that controls voluntary actions
Concussion
A bruiselike injury of the brain that occurs when the soft tissue of the brain collides against the skull
Reflex
An automatic response that occurs rapidly and without conscious control
Central nervous system
The diversion of the nervous system consisting of the brain and spinal cord
Peripheral nervous system
The division of the nervous system consisting of all of the nerves located outside the central nervous system
Cerebellum
The part of the brain that coordinates muscle actions and help maintain balance
Cerebrum
The part of the brain that interprets input from the senses, controls movement, and carries out complex mental processes
Brain stem
The part of the brain that lies between the cerebellum and spinal cord, and controls the body's involuntary actions
Brain
The part of the nervous system that controls most functions in the body
Spinal cord
The thick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system
