Which components make up the nervous system?

The correct answer highlights the essential components of the nervous system, which include the brain, spinal cord, and peripheral nerves. The brain serves as the control center for the body, processing information and coordinating responses. The spinal cord acts as a major pathway for transmitting signals between the brain and the rest of the body, facilitating reflex actions and communication. Peripheral nerves extend from the spinal cord to various body parts, allowing for the transmission of sensory information and motor commands.

In contrast, the other choices pertain to different systems entirely. For instance, the first option relates to the cardiovascular system, which is responsible for circulating blood and delivering oxygen and nutrients to tissues. The third option involves the musculoskeletal system, which supports movement and structural integrity. Lastly, the fourth choice pertains to the digestive system, involved in the processing and assimilation of food. Thus, only the second choice accurately encapsulates the intricate structure and function of the nervous system.