All or no(prenominal) principle An deed potential takes menage in 2 phases: depolarisation: inwardly the tissue layer becomes + Repolarization : inside becomes to a greater extent(prenominal) Na+ and k+ are ions that survive with the tissue layer via ion channels and channelize the galvanic charge of the neuron - when NA+ channels open, NA+ moves inside= depolarization - When K+ channels open, K+ moves out + repolarization - When depolarization reaches theresheeled (-55mv), it produces an action potential that is of every(prenominal) block the same size= all or none Depolarization phase NA+ moves in- inside the membrane goes from -55mv to 30 mv Repolarization phase IC+ moves out- inside the membrane goes from 30mV to -70 mV Can have an after hyperlarization phase= inside becomes more negative than -70mV, but it regulates bottom to -70mV Refactory design Absolute refractory: punting action potential can buoy not be initiated carnal knowledge Refractory: second action potential can be initiated, but only by a lager than convention stimulus 13 all or none action potential questions 1 GP creates electrical and signal rarely in size 2 when depolarization reaches no 3 NA+ + IC+ NA+ K+ 4 AP ordain not regenerated 5 period of time after ab begins, during which an exestable cell can not generate during absolute , second AP cannot be initiated and during relative, second AP can be initiated but only 6 braggy diameter axons 14 weave conduction synapse and repair 1 because it opens to deplolarization and an stimulative placementsynaptic potential 2 slow fine-tune; in involves simultaneous release 3 because of neurotransmitter from several presynaptic axon terminals 4 by occurring...If you want to live a full essay, post it on our website: Ordercustompaper.com
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