Nervous System

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Across
  1. 3. CNS consists of spinal cord and ......
  2. 4. The autonomic system responsible for 'fight or flight'
  3. 6. Process by which action potentials travel down an unmylelinated neurone
  4. 8. Lipid present in Schwann cells
  5. 10. Nervous impulses must exceed the..... in order to make an action potential
  6. 11. Sodium-potassium pump relies relies on ...... active transport
  7. 12. Nodes of...... which are gaps between adjacent Schwann cells
  8. 13. PNS is composed of autonomic and ...... nervous systems
Down
  1. 1. At resting potential the axon has a ..... charge
  2. 2. The autonomic system repsonsible for slowing the heart rate
  3. 5. Number of potassium ions pumped into the axon
  4. 6. Neurone that transmits nerve impulses from a receptor to motor neurone
  5. 7. Number of sodium ions pumped out of the axon
  6. 9. Small extensions of the cell body