Which component is NOT a part of the nervous system?

The lungs are not a part of the nervous system. The nervous system is a complex network that includes the brain, spinal cord, and peripheral nerves, all of which coordinate and control bodily functions and processes, including those related to sensory perception, movement, and reflexes. The cerebrum is the largest part of the brain and is responsible for various higher functions, such as reasoning and emotions. The spinal cord serves as the main pathway for information traveling between the brain and the rest of the body. Peripheral nerves are essential for transmitting signals to and from limbs and organs, playing a crucial role in the nervous system's communication network. Thus, the inclusion of the lungs as part of the nervous system is incorrect, as the lungs are primarily a part of the respiratory system, responsible for gas exchange and not for processing or transmitting nerve signals.