Directions: Read the given paragraph and answer the following questions.

The nervous system of a human being is divided into two major parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and the spinal cord, while the PNS consists of nerves and ganglia outside the brain and spinal cord. The primary role of the nervous system is to coordinate the body's response to changes in the internal and external environment.