Unit 2A

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Across
  1. 4. part of neuron that receives information
  2. 5. neuron's cell body
  3. 8. division of nervous system that prepares the body for an emergency
  4. 9. division of nervous system that controls voluntary movement of skeletal muscles
  5. 11. gap between neurons
  6. 12. neurotransmitter that effects muscle control and happiness
  7. 13. protective layer that surrounds the axon
  8. 14. part of neuron that sends messages to other neurons, muscles, and glands
  9. 15. neurotransmitter associated with learning and memory
Down
  1. 1. study of variation and heredity in living organisms
  2. 2. neurotransmitter that regulates sleep, mood, and appetite. Low levels can lead to depression
  3. 3. excess neurotransmitter is reabsorbed by the neuron that released it
  4. 6. division of nervous system that controls non-voluntary functions
  5. 7. division of the nervous system that returns the body to a calm state after an emergency
  6. 10. neurotransmitter that promotes sleep and relaxation