Across
- 4. a state of mind or feeling
- 6. the body's sleep/wake cycle
- 7. the "feel-good" neurotransmitter
- 8. relays signals between cortex and spinal cord
- 9. innermost of the 3 layers of the meninges
- 10. the ridges of the cerebral cortex
- 11. inhibitory neurotransmitter
Down
- 1. insulating layer around nerves
- 2. part of the brain involved in emotions
- 3. short nerve segment projecting from a neuron
- 5. a hormone secreted by the pineal gland
- 7. difficulty producing speech