Anatomy Crossword Puzzle

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Across
  1. 3. an automatic, involuntary response to stimulus.
  2. 5. the tiny microscopic gap between the axon of one neuron and the dendrite of the next, where cell to cell communication occurs.
  3. 6. three tough layers of protective membrane that surrounds and protect the brain and spinal cord.
  4. 7. an insulating, fatty layer that wraps around many axons, speeding up the transmission of electrical impulses
  5. 8. largest part of the brain
  6. 9. nerves that carry impulses from the brain to the muscles and glands
  7. 12. basic structural and functional unit of the nervous system
  8. 13. nerves that carry impulses from the body/senses to the brain
Down
  1. 1. branch-like fibers that receives impulses
  2. 2. long fiber that carries impulses away from the cell body
  3. 4. column of nerve tissue that extends from the brain down the back
  4. 5. the part of the PNS that controls involuntary actions
  5. 8. a region of the brain located at the back of the skull that primarily coordinates voluntary movements,posture, and balance
  6. 10. the brain and spinal cord
  7. 11. the division of the automatic nervous system that drives the "rest ad digest" response, helping the body conserve energy and relax.