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Summary: Nervous System 5; Nerve Impulses
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Read the summary and the most important questions on Nervous system 5; nerve impulses
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10.9 nervous system 5; nerve impulses
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the __ of a RMP is negatively charged
inside -
The reasons the inside of a RMP in negative
more Na+ outside than K+ inside
large proteins inside the cell tend to be negatively charged -
concentration gradients are set up by __
sodium/potassium pumps -
in graded potentials, NTs binds to __
NT-gated sodium channels -
causes local depolarization in graded potentials
sodium ions flowing down their concentration gradient -
if ta graded potential is large enough =
threshold potential -
mV of inside of cell after major depolarization
+30mV -
"peak" of action potential spike
+30mV -
if an action potential is generated at the axon hillock, then
depolarization at the first patch of plasma membrane will spread -
__ speed action potential movement (propagation)
myelin sheaths
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