Neurophysiology Exam 1 Questions With Correct Answers 2024

Neurophysiology Exam 1 Questions With
Correct Answers 2024

membrane .potential .- .correct .answer.=repolarized; .results .from .the .uneven .distribution .of
.ions .across .the .cell .membrane




higher .concentration .of .sodium .ion .___ .of .cell .during .resting .potential .- .correct
.answer.outside




higher .concentration .of .potassium .ions .___ .of .cell .during .resting .potential .- .correct
.answer.inside




resting .potential .charge .of .membrane .- .correct .answer.-70 .mV

is .it .more .negative .inside .or .outside .the .cell .during .resting .potential? .- .correct
.answer.inside .the .cell




is .it .more .positive .inside .or .outside .the .cell .during .resting .potential? .- .correct
.answer.outside




Graded .potential .- .correct .answer.small .changes .in .the .membrane .potential, .which .occur
.by .the .opening .of .ligand-gated .channels .(may .be .open .by .the .neurotransmitter) .on .the

.dendrites .or .cell .body .of .a .neuron




Action .potential .- .correct .answer.100mv .change .in .the .membrane .potentials. .large
.electric .signals, .which .are .capable .of .traveling .down .the .axon .of .a .neuron .to .cause .the

.release .of .a .neurotransmitter




Axon .hillock .- .correct .answer.Cone .shaped .region .of .an .axon .where .it .joins .the .cell .body
.that .acts .as .the .trigger .zone .for .action .potential




Threshold .potential .voltage .- .correct .answer.-55 .mV

2 .types .of .graded .potentials .- .correct .answer.Inhibitory .or .excitatory .postsynaptic
.potentials




IPSPs .- .correct .answer.*Inhibitory .postsynaptic .potentials* .that .result .from
.hyperpolarization .and .make .the .neuron .less .likely .to .fire