Across
- 4. released when excited, angry, or frightened
- 6. automatic and involuntary response to an outside stimulus
- 7. part of the brain that controls balance and coordination
- 9. system allows you to think, speak, see, move, and feel
- 10. neurons connected to your sense organs
- 13. an organ that makes a chemical substance that is used or release by the body
- 14. type of chemical messenger in the body that is produced by endocrine glands
Down
- 1. gland organ that produces chemical substances called hormones
- 2. a nerve cell
- 3. part of brain that controls voluntary muscle movements, thinking, learning, memory, speech, and senses
- 4. the fiber on neurons that carries messages away from cell
- 5. part of the brain that controls involuntary functions
- 8. connects brain to the spinal cord
- 11. the space between the axon of one neuron and the dendrite of another
- 12. the fiber on neurons that carries messages into the cell
