division of the nervous system responsible for involuntary activity of cardiac muscle, smooth muscle, and glands

control center - division of the nervous system, consisting of the brain and spinal cord

clear liquid that surrounds the brain and spinal cord and provides mechanical and chemical protection

specialized capillaries, located in the ventricles, that produce cerebrospinal fluid

protective membranes surrounding the brain and spinal cord

division of the nervous system that transmits outgoing information to muscles and glands

division of the nervous system that relaxes the body and slows or inhibits many high energy functions; often referred to the rest and digest system

communication lines between brain and body - division of the nervous system consisting of cranial and spinal nerves

network of interlaced nerves

automatic response to a stimulus