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Handout 2 (wk 3)0

Handout 2 (wk 3)0 - BIPN100 Winter 2008 Dr Fortes Ann Shih...

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BIPN100 Winter 2008 Dr. Fortes Ann Shih [email protected] OH: Mon 10-11 @ Café Roma 1. Graded potential vs. Action potential comparison Graded potential Action potential Stimulus amplitude signal encode Decay Over time and distance Refractory Absolute and relative Location Dendrite, soma 2. Describe the open/close of the channels at each point Point 1: Point 2: Point 3: Point 4:
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BIPN100 Winter 2008 Dr. Fortes Ann Shih [email protected] OH: Mon 10-11 @ Café Roma Point 5 Point 6 3. Velocity of AP depend on:_____________ and _______________ Large longitudinal resistance would have _______________ velocity Larger membrane resistance would have _______________ velocity 4. Know the difference of A, B and C fibers and the relative diameter and velocity and their function 5. Synaptic transmission Gap junction Chemical (Neurotransmitter) Iontropic Metabotropic Presynaptic property MB connected, allow diffusion of materials and signals are electrically coupled Post-synpatic property Receptor is ion channel, allow ion to flow once open Termination of signal Signal diffuse out
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