Potentiation and nerve cell communication

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Across
  1. 2. refractory period in which Na channels are open, so another stimulus cannot occur.
  2. 5. excitatory potentials that pass an electrical signal down the axon.
  3. 8. type of summation in which multiple weak impulses occur quickly in succession at one location.
  4. 9. cholinergic neurotransmitter that stimulates skeletal muscle contraction, mediates parasympathetic nervous system effects.
  5. 10. refractory period in which K channels are open and Na channels are closed, so another stimulus could occur if the signal was very strong.
  6. 11. postsynaptic potential which is hyperpolarizing; inhibits action potentials.
Down
  1. 1. potentials that can be inhibitory or excitatory to neurons.
  2. 3. type of summation in which multiple weak impulses contact the neuron at different sites to create a larger potential.
  3. 4. postsynaptic potential which causes depolarization; promotes action potentials.
  4. 6. adrenergic neurotransmitter that mediates sympathetic nervous system effects.
  5. 7. describes the hopping-type movement of ions down the axon and between the myelin sheaths.