Nervous System and Reflexes Crossword

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Across
  1. 2. Extensions from the neuron cell body that take information TO the cell body.
  2. 3. A thing or event that evokes a specific functional reaction in an organ or tissue.
  3. 6. The basic building block (cells) of the nervous system.
  4. 7. The nervous system that controls responses such as; constricts pupils; stimulates salivation; constricts airways; slows the heartbeat; stimulates digestion; etc.
  5. 9. The area between one neuron and the next.
  6. 10. A behaviour that is the eventual reaction to a stimulus.
  7. 11. The inner part of your spine that contains nerves going from your brain to the other parts of your body.
  8. 12. Also called the soma; the part of the cell that contains the nucleus.
  9. 15. A specialised cell or organ that responds to specific stimuli in the extracellular environment and whose stimulation alters the level of activity in a sensory neuron.
  10. 17. A rapid and simple response to a specific stimulus.
  11. 18. A neuron whose axon carries motor commands from the CNS toward effectors in the PNS.
Down
  1. 1. Portion of the nervous system that includes all the nerves and neurons OUTSIDE the brain and spinal cord.
  2. 4. A neuron which transmits impulses between other neurons; especially as part of a reflex arc.
  3. 5. Fatty substance that surrounds some axons insulating them from chemical and electrical interference.
  4. 8. A neuron whose axon carries sensory information from the PNS toward the CNS.
  5. 13. A muscle or gland that responds to neural stimulation by altering its activity and producing a specific effect.
  6. 14. The brain and spinal cord make up this part of the nervous system.
  7. 16. The part of the neuron that takes information AWAY from the cell body.