Ch10T15-19.txt

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Author:
AP101e2014
ID:
269650
Filename:
Ch10T15-19.txt
Updated:
2014-04-07 18:29:31
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Description:
Ch10 action potential
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  1. The two gates involved in action potential.
    K+ gate and Na+ gate
  2. The first step in action potential
    +Polarized (Na+)
  3. The second step in action potential
    -Depolarized (Na+ inside)
  4. The third step in action potential
    +Repolarized (K+ outside)
  5. The final step in action potential
    +Refractory (Na+ up and K+ down)
  6. Value of threshold
    -55
  7. Value of resting membrane potential RMP
    -70
  8. Causes the activation gates to open
    Threshold
  9. Voltage at which Na+ gates close
    +30
  10. Value that gates reset (hyperpolarized)
    -80/-85
  11. Impulses travel at full strength
    All or Nothing Response
  12. The area of the initial segment of an axon of a multipolar neuron that contains many Na+ gates
    Trigger zone
  13. Condition in which the voltage is farther from threshold in the negative direction
    Hyperpolarization
  14. The result of reaching threshold
    Action potential
  15. Occurs before threshold potential to depolarize a neuron through diffusion
    Graded potential
  16. A cone-shaped thickening that the axon arises on from the cell body
    Axon Hillock
  17. Condition is which the voltage is farther from threshold in the less negative direction (above -55)
    Hypopolarized
  18. Closing the K+ gate or opening the Na+ gate will result in this
    Hypopolarization
  19. Opening the K+ gate of closing the Na+ gate will result in this
    Hyperpolarization
  20. Axon's voltage-gated sodium channels are not at all responsive for 1/2500 of a second
    Absolute refractory period
  21. Membrane reestablishes its resting potential
    Relative refractory period

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