The two main divisions of the nervous system are the Central Nervous System (CNS) and the Peripheral Nervous System (PNS).
1. Central Nervous System (CNS): This division consists of the brain and spinal cord. The brain serves as the control center for processing information and coordinating actions. It is responsible for functions such as thought, memory, emotions, and sensory processing. The spinal cord transmits signals between the brain and the rest of the body, enabling motor control and sensory information processing.
2. Peripheral Nervous System (PNS): This division includes all the nerves that branch out from the brain and spinal cord. One important organ within the PNS is the sciatic nerve. The sciatic nerve plays a crucial role in transmitting signals from the lower body to the brain and back, allowing for movement and sensation in the legs and feet.