introduction to the nervous system (true/false)

resistance

hindrance to current flow

current

the flow of electrical charge from one point to another

The neuroglia are supporting cells of the nervous system

true

a bundle of nerve fibers is called a nerve in the PNS

true

a bundle of nerve fibers is called a track in the CNS

true

in the body the electrical charges are provided by ions

true

neurons, also called nerve cells, are the structural unit of the nervous system

true

the central nervous system is composed of the brain and spinal cord

true

the major functional divisions of the nervous system are the sensory (afferent) division and the motor (efferent) division

true

the motor (efferent) division conveys impulses away from the CNS

true

the nervous system is divided anatomically into the central nervous system and the peripheral nervous system

true

the peripheral nervous system is composed of the cranial nerves, spinal nerves, and ganglia

true

the sensory (afferent) division conveys impulses to the CNS

true

voltage

measure of potential energy generated by separated charge