What are the three parts of the nervous system?

The three parts of the nervous system consist of the central nervous system, the peripheral nervous system, and the autonomic nervous system.

The central nervous system (CNS) includes the brain and spinal cord, serving as the main processing center for information. It integrates sensory input and coordinates responses.

The peripheral nervous system (PNS) comprises all the nerves that branch out from the CNS and connect it to the limbs and organs. It plays a crucial role in transmitting signals to and from the CNS.

The autonomic nervous system (part of the PNS) regulates involuntary bodily functions, like heart rate and digestion, and operates unconsciously.

Overall, understanding these three parts is essential for grasping how the nervous system functions in maintaining homeostasis and enabling interaction with the environment.