Which components make up the nervous system?

The correct response identifies the primary components of the nervous system, which are the brain, spinal cord, and nerves. This system is crucial for transmitting signals between different parts of the body and coordinating bodily functions. The brain serves as the control center, processing information and making decisions. The spinal cord acts as a pathway for signals between the brain and the rest of the body, and the nerves extend from the spinal cord and brain to the peripheral areas, facilitating communication throughout the body.

Other choices include components that are not primarily part of the nervous system. For instance, the heart and lungs are integral to the circulatory and respiratory systems respectively, while muscles and skin pertain more to the muscular and integumentary systems. The ears and eyes, while they are sensory organs, do not encompass the entirety of the nervous system nor are they central components like the brain, spinal cord, and nerves are.