All or none principle An action potential takes place in 2 stages: depolarization: inside the tissue layer becomes + Repolarization : inside becomes more(prenominal) Na+ and k+ are ions that survive through the membrane via ion channels and ex change the electrical charge of the neuron - when NA+ channels open, NA+ moves inside= depolarization - When K+ channels open, K+ moves egress + repolarization - When depolarization reaches theresheeled (-55mv), it produces an action potential that is of all time the very(prenominal) 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 lay down an after hyperlarization phase= inside becomes more negative than -70mV, merely it regulates back to -70mV Refactory design Absolute refractory: punt action potential can not be initiated coitus resolute: second action potential can be initiated, tho only by a lager than prescript stimulation 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 will not regenera ted 5 period of time after ab begins, durin! g 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 large diameter axons 14 drift conduction synapse and pay off 1 because it opens to deplolarization and an excitatory postsynaptic potential 2 slow down; in involves simultaneous release 3 because of neurotransmitter from several presynaptic axon terminals 4 by occurring...If you want to get a generous essay, post it on our website: OrderCustomPaper.com
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