Across
- 1. ________ with other people early in life are the major source of development of the emotional and social parts of the brain.
- 6. Chemical messengers with coded information.
- 8. Protective coating around an axon preventing short-circuiting between neurons.
- 11. Information receivers.
Down
- 2. Neurotransmitters carrying coded information regulating the onset of sleep.
- 3. The outside world is experienced through the _________ enabling the brain to create or modify connections.
- 4. Information senders.
- 5. The brain operates on a "________ it or lose it" principle.
- 7. Connecting place for exchange of chemical information.
- 9. Brain cell.
- 10. The outside __________ shapes the brain's wiring