The Brain, Nervous System,

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Across
  1. 2. ______Nervous system, Arouses the body for action
  2. 3. Neurons that carry information from the body to the brain.
  3. 4. Forms and processes new memories.
  4. 9. Period after firing when a neuron cannot fire again.
  5. 11. Neurons that carry commands from the brain to muscles.
  6. 12. ______Nervous system, All nerves outside the CNS; carries messages to and from the brain and body.
  7. 13. Nerve cells that send and receive information.
  8. 16. Helps with balance and coordination
  9. 17. Forms and processes new memories.
  10. 21. Cells that support, nourish, and protect neurons.
  11. 22. Part of the brain stem that controls heartbeat and breathing.
  12. 23. ______Nervous system, Controls involuntary actions (like heartbeat and digestion).
Down
  1. 1. ______Nervous system, Calms the body
  2. 5. Relays sensory information to the brain
  3. 6. When a neuron becomes positively charged and fires.
  4. 7. Maintains body balance (hunger, thirst, temperature)
  5. 8. Connect sensory and motor neurons in the brain/spinal cord.
  6. 10. _____ Nervous System, the brain and spinal cord; processes information and makes decisions.
  7. 14. ______Nervous system, Controls voluntary movements of muscles.
  8. 15. Neurotransmitters are taken back into the sending neuron.
  9. 18. Master gland that controls other glands and hormones.
  10. 19. Processes emotions, especially fear and aggression.
  11. 20. The minimum level needed to trigger a neuron to fire.