๐ SET 23: Graded Potentials + Threshold (COMBINED)
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Last updated 8:11 PM on 4/2/26
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9 Terms
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What is a graded potential?
A small, local change in membrane potential
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Where do graded potentials occur?
In dendrites and cell body
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What determines the strength of a graded potential?
The strength of the stimulus
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What is threshold?
The minimum stimulus needed to trigger an action potential
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What is the typical threshold value?
About -55 mV
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Can graded potentials trigger action potentials?
Yes, if they reach threshold
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What happens if threshold is not reached?
No action potential occurs
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What happens if threshold is reached?
A full action potential is triggered
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What does all-or-none mean?
A full action potential occurs or none at all
