C2.2

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Across
  1. 1. The phase of an action potential where potassium ions rush out of the cell.
  2. 5. The type of rapid conduction where an impulse jumps between nodes of Ranvier.
  3. 7. The enzyme that breaks down acetylcholine to prevent continuous stimulation.
  4. 9. The long fiber that carries the nerve impulse away from the cell body.
  5. 12. Chemical messengers like acetylcholine that cross the synaptic gap.
  6. 14. A small membrane-bound sac that stores neurotransmitters in the axon terminal.
  7. 15. A fatty layer that insulates the axon and increases the speed of nerve impulses.
  8. 16. The membrane potential maintained when a neuron is not conducting an impulse.
  9. 18. The minimum membrane potential required to trigger an action potential.
  10. 19. The pump that restores the resting potential by moving ions against their gradients.
Down
  1. 2. The neuron that receives the chemical signal via specific receptors.
  2. 3. The gaps in the myelin sheath where the action potential occurs.
  3. 4. The process by which neurotransmitters are released into the synapse.
  4. 6. A specialized cell that transmits electrical impulses within the nervous system.
  5. 8. Branch-like structures that receive signals from other neurons or receptors.
  6. 10. The junction between two neurons where signals are transmitted chemically.
  7. 11. The phase of an action potential where sodium ions rush into the cell.
  8. 13. The instrument used to measure and visualize changes in membrane potential.
  9. 17. The neuron that releases neurotransmitter into the synaptic cleft.