| A | B |
|---|
| Central Nervous System | Brain & spinal cord work together to take-in and respond to messages. It controls everything in the body. |
| Cerebellum | Below the cerebrum. Controls balance and posture. |
| Cerebrum | Largest part of the brain. It controls thinking, memory, speech, movement. |
| Stimulus | A change in the environment that causes a reaction. (ex: a hot stove) |
| Nervous System | A system that controls all of the activities of the body – the brain, spinal cord, nerves, senses. |
| Sensory neurons | Send signals from sense organs (like eyes, ears, and skin) to the spinal cord and brain. |
| Peripheral nervous system | Connects all parts of the body, through neurons, to the Central Nervous System |
| Autonomic Nervous System | Controls internal muscle movement. Ex: involuntary movement like digestion and breathing. |
| Spinal cord (spine) | It connects the brain to the rest of the nervous system and sends messages to the brain. |
| Medulla (brain stem) | Connects brain to the spinal cord and controls involuntary body processes. |
| motor neurons | Send signals from the CNS to the muscles, telling them to move. |
| Neurons | Nerve cell |
