Structure of the Nervous system puzzle

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Across
  1. 3. contain the nucleus of neuron (use space between the two words)
  2. 4. kind of neurons which carry impulses away from the brains and spinal cord to gland or muscle which result in a response.
  3. 6. potential a nerve impulse is an electric charge
  4. 7. a chemical that diffuses across a synapse
  5. 13. kind of neurons send impulses from receptors in the skin and sense organs to the brain and spinal cord.
  6. 14. kind of neurons found in spinal cord and brain
  7. 15. A nerve pathway that consists of a sensory neuron an interneuron and a motor neuron(use space between the two words).
Down
  1. 1. another name for a nerve impulse (use space between the two words).
  2. 2. forms an insulating layer around the axon.
  3. 5. receive and conduct the impulses to the cell body.
  4. 7. specialized cells that are organized to form complex networks.
  5. 8. any thing that causes a person to react.
  6. 9. the minimum stimulus to causes an action potential to be produced.
  7. 10. carries the nerve impulse from the cell body to other neurons and muscles.
  8. 11. a small gap exists between the axon of one neuron and the dendrite of another neuron.
  9. 12. situation when there are more sodium ions(Na+) outside that cell than inside the cell.