The two major divisions of the vertebral nervous system are the ____.

A) autonomic and peripheral systems
B) sympathetic and parasympathetic systems
C) cranial and spinal nerves
D) central and peripheral nervous systems
E) brain and spinal cord

The central nervous system includes the brain and spinal cord, while the peripheral nervous system includes all other nerves in the body, including the cranial and spinal nerves. The autonomic and sympathetic systems are subdivisions of the peripheral nervous system, and while they are important, they are not the major divisions of the entire vertebral nervous system.