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