What are the two main divisions of the nervous system?

The two main divisions of the nervous system are the central nervous system (CNS) and the peripheral nervous system (PNS).

The central nervous system consists of the brain and spinal cord, which act as the control center for processing information, coordinating responses, and integrating sensory input. This system is vital for cognitive functions and the overall regulation of body activities.

The peripheral nervous system includes all the nerves that branch out from the spinal cord and brain, connecting them to the rest of the body. It is responsible for transmitting sensory information back to the CNS and conveying motor commands from the CNS to various body parts, allowing for voluntary and involuntary actions.

Understanding these divisions is crucial as they work together to facilitate communication within the body, allowing responses to internal and external stimuli. The other options presented encompass parts of the nervous system but do not represent the primary divisions as clearly or comprehensively. For instance, the enteric nervous system, while important, operates primarily within the gastrointestinal tract and is regarded as a part of the autonomic nervous system rather than a main division. Additionally, the autonomic nervous system and its subdivisions, like the sympathetic and parasympathetic nervous systems, fall under the umbrella of the PNS. Hence, the most accurate representation