1. name the two major
divisions of the nervous
system.

The two major divisions of the nervous system are the central nervous system and the peripheral nervous system. In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.