Which components make up the central nervous system?

The central nervous system (CNS) is composed of the brain and spinal cord. This system serves as the primary control center for the body, integrating sensory information and coordinating responses. The brain processes data from the sensory organs, enabling us to think, feel, and respond to our environment. The spinal cord acts as a communication conduit between the brain and the rest of the body, transmitting signals that control movement and reflex actions.

The other options do not contribute to the central nervous system. The heart and lungs are components of the cardiovascular and respiratory systems, respectively, functioning to circulate blood and facilitate breathing. The stomach and intestines are part of the digestive system, responsible for processing food and extracting nutrients. Muscles and bones are involved in the musculoskeletal system, giving the body structure and enabling movement. Each of these systems plays vital roles, but they are distinct from the central nervous system, which specifically manages neural functions and responses.