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dcwksheet30 - Dwayne Chang [email protected] OH Wed...

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Dwayne Chang [email protected] OH: Wed 12:30P @Leichtag Lobby Professor: Dr. Fortes BIPN 100 Winter 2008 Week 3 –Action Potentials. Refractory periods, and other abnormalities I. Action vs. Graded Potential a. Complete the following table: Condition Action Potential Graded Potential Amplitude (Needs a threshold / Proportional to stimulus) Direction (Can depolarize + hyperpolarize / All or none) Summated (Yes / No) Decay (With distance / Without loss) II. Gating for AP’s a. The event that activates all three gates during the firing of an AP is _________________________________________________________________ _ b. 3 gates that become turned on: i. Na + Activation gates are ( Closed/Open ) prior to the above mentioned event and ( Close/Open ) afterwards. This happens relatively ( Fast/Slow/Very Slow ). ii. Na + Inactivation gates are ( Closed/Open ) prior to the above mentioned event and ( Close/Open ) afterwards. This happens relatively ( Fast/Slow/Very Slow ). iii. K + Activation gates are ( Closed/Open ) prior to the above mentioned event and ( Close/Open ) afterwards. This happens relatively ( Fast/Slow/Very
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Dwayne Chang [email protected]
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