Kaplan Nursing Entrance Exam Practice 2026 – Comprehensive Prep

The central nervous system is composed of the brain and the spinal cord. This system is responsible for processing and transmitting information throughout the body. The brain serves as the control center, processing sensory information, coordinating movements, and enabling cognitive functions such as thinking and memory. The spinal cord acts as a conduit for signals between the brain and the rest of the body, facilitating reflex actions and transmitting sensory and motor information.

Other components mentioned in the options, such as the peripheral nerves, neurons, glial cells, and nerve endings, are important parts of the overall nervous system but are classified under the peripheral nervous system or as cellular components rather than being part of the central nervous system itself. Thus, the focus on the brain and spinal cord distinctly defines the structure and function of the central nervous system.