Neurons and Neurotransmitters

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Across
  1. 3. The end of a neuron;releases signal to another neuron
  2. 5. Part of neuron that looks like a tree branch and receives signals
  3. 7. A quick, automatic response to a stimuli
  4. 8. Neurotransmitter that calms neuron activity; acts as an inhibitory and slows neuron activity
  5. 9. Chemical linked to pleasure and reward; released during activities we enjoy; excess amounts can lead to addiction
  6. 10. Body's main "highway" that sends messages to and from the brain
  7. 12. Deficiency and excess chemicals can cause problems, chemical ______ is the key.
  8. 13. A deficiency in this chemical would cause a person to suffer from insomnia(unable to sleep)
  9. 15. Epinephrine Increases alertness and arousal; part of the _____ response "fight or flight"
Down
  1. 1. State of internal balance maintained by body systems
  2. 2. Cells in nervous system that transmit messages
  3. 4. Type of neuron that carries commands from the brain to the muscles
  4. 6. A chemical messanger sent between neurons
  5. 10. Part of neuron that stores energy
  6. 11. Type of neuron that sends messages from senses to the brain
  7. 14. Acetylcholine is a neurotransmitter whose function is ____ movement