6_Unit2.1_NS_Intro copy

action potential flow of information refers to

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Unformatted text preview: s shit WELL!!!!!! Action Potential Flow of information refers to propagation of an action potential (electrical activity) STIMULUS action potetnials--fire all or nothing manner Threshold •  Brief change from negative to positive in transmembrane potential •  All-or-none response: amplitude of AP does not change based on magnitude of stimulus if the sensation is ore intense it just fires faster not in varying strength. depolarization--chemicals cross the cell membrane and cause a depolarixation that sends an impiulse down the axon. n it repolarizes the opposite reaction happens really important!!!!!!!!!! influx- Na exful-K Action Potential know this shit know this shit konw this shit •  Action potential is the result of the influx and efflux of sodium (Na+) and potassium (K+) ions, respectively, across the membrane Threshold depol--membrane becomes more positive repol-- membrane returns to resting value Depolarization – membrane potential more positive than resting potential Repolarization – return of membrane potential to resting value Hyperpolarization – membrane potential more...
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This document was uploaded on 03/28/2014 for the course KNES 385 at Maryland.

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