The Brain

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Across
  1. 4. made up of the brain and spinal cord
  2. 5. tiny chemical messengers that cause electrical changes in nearby neurons
  3. 6. bushy, branch-like structures that receive signals
  4. 9. these types of neurotransmitters send a STOP signal
  5. 10. handles emotions, instincts, and goal-directed behavior
  6. 15. primary functional cells of the brain
  7. 16. bundles of axons that carry electrical impulses
Down
  1. 1. the outer layer of the brain
  2. 2. long branch that extends from the cell body to carry signals
  3. 3. controls vital functions like heart rate and breathing
  4. 7. carries incoming sensory information from the body to the brain
  5. 8. type of cell that supports, protects, and nourishes neurons
  6. 11. fatty substance that surrounds axons
  7. 12. body processes information and decides whether to send another message
  8. 13. small space between the axon of one neuron and the dendrites of another
  9. 14. these types of neurotransmitters send a GO signal