Bio 220 - Chapter 8

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Author:
cbennett
ID:
199276
Filename:
Bio 220 - Chapter 8
Updated:
2013-02-10 00:42:17
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Bio 220 Chapter
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Bio 220 - Chapter 8
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  1. An action potential releases neurotransmitter from a neuron by opening a
    voltage-gated Ca++ channel
  2. Depolarization phase of an action potential results from the opening of which channel?
    Voltage-gated Na+ channels
  3. Repolarization phase of an action potential results from
    the opening of voltage-gated K+ channels
  4. hyperpolarization results from
    slow closing voltage-gated K+ channels
  5. Neurons of the CNS are called
    interneurons
  6. If a second graded potential begins before the first one ends, the voltage changes add together
    summation
  7. When a cell becomes more negative
    hyperpolarization
  8. When a cell becomes more positive
    depolarization
  9. more neurotransmitters released at the axon terminal is directly related to
    the total number of action potentials
  10. During action potential when the inside of the cell has become more positive than outside
    overshoot
  11. During relative refractory period ____ gates are open
    K+
  12. voltage regulated channels are located
    in the membranes of axons
  13. The major determinant of the resting potential of all cells is
    K+ gradient between the cell and interstitial fluid

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