1. Central Nervous System (CNS):

* Brain: The control center of the body, responsible for thought, memory, emotion, and controlling movement.

* Spinal Cord: A long bundle of nerves that extends from the brain down the back. It carries messages between the brain and the rest of the body.

2. Peripheral Nervous System (PNS):

* Nerves: Bundles of fibers that carry signals to and from the CNS.

* Ganglia: Clusters of nerve cell bodies located outside the CNS.

Here's a breakdown of the specific organs within each part:

Central Nervous System:

* Brain:

* Cerebrum: Largest part of the brain, responsible for higher-level functions like thinking, reasoning, and language.

* Cerebellum: Coordinates movement, balance, and posture.

* Brain Stem: Connects the brain to the spinal cord and controls vital functions like breathing and heart rate.

* Spinal Cord: A long, cylindrical structure that extends from the brain stem.

Peripheral Nervous System:

* Cranial Nerves: 12 pairs of nerves that originate from the brain and control sensory functions like sight, smell, taste, hearing, and touch, as well as motor functions like facial expressions and swallowing.

* Spinal Nerves: 31 pairs of nerves that originate from the spinal cord and control sensory and motor functions in the body.

* Ganglia: Collections of nerve cell bodies found in the PNS.

Note: The nervous system is complex and intertwined with other organ systems. While these are the main organs, there are many other structures and cells that contribute to its function.