Across
- 4. Controls involuntary functions
- 8. Functional cell of the nervous system
- 9. Chemical messenger released by neurons
- 11. Short extensions that receive information
- 12. The largest part of the brain
Down
- 1. The body's control and communication system
- 2. Carries messages from the brain to the rest of the body
- 3. Extension of a neuron that carries impulses away from the body
- 5. Protective covering around nerve fibers
- 6. Responsible for balance and coordination
- 7. Cells that support and protect neurons
- 10. Connects the brain to the spinal cord