action potentials

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8 Terms

1
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type of signal

regenerating conduction signal

2
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occurs where?

trigger zone through axon

3
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types of gated ion channels involved

voltage-gated channels

4
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ions involved

Na+ and K+

5
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type of signaling

depolarizing

6
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strength of signal

all-or-none phenomenon, cannot be summed

7
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what initiates the signal?

above threshold graded potential at the trigger zone

8
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unique characteristics

  • threshold stimulus required to initiate.

  • refractory period: two signals too close together in time cannot sum