Final answer:
The nervous system is divided into the central nervous system, comprising the brain and spinal cord, and the peripheral nervous system, which includes nerves like cranial and spinal nerves.
Step-by-step explanation:
The Two Main Parts of the Nervous System
The nervous system can broadly be divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS).
Central Nervous System (CNS)
The CNS includes the brain and the spinal cord. The brain is responsible for processing sensory information, initiating responses, and integrating the activities of all parts of the body. The spinal cord is a channel for signals between the brain and the body and is involved in numerous reflex actions.
Peripheral Nervous System (PNS)
The PNS connects the CNS to the rest of the body and can be further divided into the somatic nervous system and the autonomic nervous system. Examples examples of the PNS include cranial nerves, which originate in the brain, and spinal nerves, which originate in the spinal cord.