ch 12 nervous system flashcards _ Quizlet

Com7971136ch 12 ner vous system flash car ds 1655

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Unformatted text preview: al. The m em brane w ill depolarize to threshold. The inside of the m em brane w ill becom e m ore negativ e. The inside of the m em brane w ill becom e m ore positiv e. The m em brane w ill becom e depolarized. A stim ulus inhibitory that stim ulus changes a postsy naptic neuron's m em brane from resting potential to -85 m V is: a tem poral stim ulus an q uizlet.com/7971136/ch- 12- ner vous- system- flash- car ds/# 17/55 11/3/13 ch 12 ner vous system flashcar ds | Quizlet excitatory stim ulus a saltatory stim ulus an inhibitory stim ulus a depolarizing stim ulus If acety lcholin e (ACh) causes inhibition of a postsy naptic neuron, to w hat ty pe of m em brane channel did the ACh bind? v oltageregulated sodium channel chem ically regulated sodium channel m echanicall y -regulated channel v oltageregulated calcium channel chem ically regulated potassium c h a nne chem ically regulated potassium channel A shift of the resting depolarizati on q uizlet.com/7971136/ch- 12- ner vous- system- flash- car ds/# 18/55 11/3/13 ch 12 ner vous system flashcar ds | Quizlet transm em b rane potential tow ard 0 m V is called ________ The sum of electrochem the ical gradient electrical a nd chem ical forces acting on an ion is know n as its ________ . Where in axon hillock the neuron is an action potential initially generated? any w here on the axon som a and dendrites axon hillock The v oltage depolarizati gated na on phase of channels an action potential results from the opening of w hich channels? chem ically gated N a+ channels chem ically gated K+ q uizlet.com/7971136/ch- 12- ner vous- system- flash- car ds/# 19/55 11/3/13 ch 12 ner vous system flashcar ds | Quizlet channels v oltagegated K+ channels v oltagegated N a+ channels The repolarizati on phase of an action potential results from ________ __. the opening of v oltagegated K+ channels the opening of v oltagegated N a+ channels the closing of v oltagegated N a+ channels the closing of v oltagegated K+ channels opening of v oltage gated k channels Hy perpolari zation results from ________ __. slow closing of v oltagegated N a+ channels fast closing of v oltagegated K+ channels slow closing slow closing of v oltage gated k channels q uizlet.com/7971136/ch- 12- ner vous- system- flash- car ds/# 20/55 11/3/13 ch 12 ner vous system flashcar ds | Quizlet of v oltagegated K+ channels What is the 1 00 m v m agnitude (am plitude) of an action potential? 70 m V 30 m V 1 00 m V How is an c action potential propagated along an axon? Stim uli from the graded (local) potentials from the som a and dendrites depolarize the entire axon. An efflux of potassium from the current action potential depolarizes the adjacent area. An influx of sodium ions from the current action potential depolarizes the adjacent q uizlet.com/7971136/ch- 12- ner vous- system- flash- car ds/# 21/55 11/3/13 ch 12 ner vous system flashcar ds | Quizlet area. a b or c Why does the action potential only m ov e aw ay from the cell body ? The areas that hav e had the action potential are refractory to a new action potential. The flow of the sodium ions only goes in one direction— aw ay from the cell body a The v elocity c of the action potent...
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