Across
- 3. Part of brain that helps with balance and coordination.
- 4. Structure that sends messages between brain and body.
- 8. Organ that controls thinking, movement, and body functions.
- 10. Carry information from body to the brain.
- 13. Process that controls hormone levels in the body.
- 16. Keeping the body’s internal conditions stable.
- 18. Carry messages from brain to muscles.
- 19. The brain and spinal cord.
- 20. Part of brain stem that controls breathing and heartbeat.
Down
- 1. Electrical message sent by neurons.
- 2. Chemical that carries signals between neurons.
- 5. Bundle of fibers that carry messages in the body.
- 6. Special cell that sends electrical signals through the body.
- 7. Group of cells that produces hormones.
- 8. Connects brain to spinal cord and controls basic functions.
- 9. System that uses hormones to control body functions.
- 11. Changes in the environment that cause a response.
- 12. Body system that controls actions and responses to stimuli.
- 14. Largest part of brain; controls thinking and memory.
- 15. Chemical messenger that affects body processes.
- 17. Nerves that connect the CNS to the body.