Which two major divisions comprise the central nervous system (CNS)?

The central nervous system (CNS) is fundamentally composed of two major divisions: the brain and the spinal cord. The brain serves as the control center for processing sensory information, regulating bodily functions, and managing cognitive processes such as thinking and memory. It functions through various parts including the cerebrum, cerebellum, and brainstem. The spinal cord acts as the main conduit for information traveling between the brain and the rest of the body, facilitating reflexes and communication. Understanding this structure is essential for grasping how the CNS coordinates complex behaviors and responses to environmental stimuli, highlighting the importance of both the brain and spinal cord in maintaining bodily functions and responding to external challenges.