Neurons

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Across
  1. 3. attached to the cell body, they receive neurotransmitters from other neurons
  2. 6. __________ matter -- the cell bodies of neurons in the brain
  3. 7. the electrical signal that travels down the axon
  4. 10. the cells that feed and nourish neurons
  5. 11. a neurotransmitter that affects mood; too little = depression
  6. 12. electrical signals travel down this part
  7. 13. it contains the cells dna
Down
  1. 1. __________ matter -- the axons covered in myelin
  2. 2. it protects the axon and speeds up neural impulse
  3. 3. a neurotransmitter associated with rewards like social media likes
  4. 4. these parts of the axon hold the neurotransmitters
  5. 5. a nerve cell, there are a billion in your brain
  6. 8. the cell body
  7. 9. the space between neurons (they never touch!)