Which lobe is NOT part of the central nervous system structures?

The nerves are not considered part of the central nervous system (CNS) structures. The central nervous system is primarily composed of the brain and spinal cord, which includes the various lobes of the brain such as the frontal, parietal, and temporal lobes. These lobes are integral parts of the brain that are involved in various functions including decision making, sensory perception, and auditory processing.

In contrast, nerves are part of the peripheral nervous system (PNS), which consists of all the neural elements outside of the brain and spinal cord. The PNS connects the CNS to the limbs and organs, facilitating communication between the body and the central nervous system. This distinction emphasizes that while the lobes directly contribute to central brain functions, nerves serve as pathways that relay information between the brain and the rest of the body.