Here's a breakdown:
* Central Nervous System (CNS): This includes the brain and spinal cord. The brain processes information and sends out commands, while the spinal cord acts as a communication highway between the brain and the rest of the body.
* Peripheral Nervous System (PNS): This network of nerves branches out from the spinal cord and reaches every part of the body. It acts as the messenger system, carrying information from the senses to the CNS and from the CNS to the muscles and glands.
How it works:
* Nerves: These are bundles of specialized cells called neurons. Neurons transmit signals in the form of electrical impulses.
* Neurotransmitters: Chemical messengers that allow neurons to communicate with each other and with other cells in the body.
Key functions of the nervous system:
* Sensory Input: Receives information from the senses (sight, sound, touch, taste, smell) and sends it to the brain.
* Motor Output: Sends signals from the brain to muscles and glands, controlling movement, reflexes, and internal functions.
* Integration: Processes information, makes decisions, and coordinates responses.
Let me know if you have any other questions!
