Exam 2 Questions And Answers Neuroscience

Exam 2 Questions And Answers
Neuroscience
___ZinnervateZstriatedZmuscleZfibers,ZandZ_____ZinnervateZspecializedZfibersZcalledZ___Z-
ZCORRECTZZANSWER-αZmotorZneurons;ZγZmotorZneurons;ZmuscleZspindles




____ZpreventsZmusclesZfromZgeneratingZexcessiveZtensionZandZhelpsZmaintainZaZsteadyZl
evelZofZtoneZduringZmuscleZfatigueZ-ZCORRECTZZANSWER-
theZIbZafterwardZfromZtendonZorgansZcontactingZIbZinhibitoryZinterZneurons,ZdecreasingZth
eZactivityZofZaZmotorZneuronsZinnervatingZtheZsameZmuscle

_____ZandZ_____ZareZsolelyZpartZofZtheZventralZandZdorsalZvisualZpathways,ZrespectivelyZ-
ZCORRECTZZANSWER-V4,ZMT




AZ500-
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onZinZtheZ____ZsuperiorZoliveZfromZtheZleftZearZ____ZthanZcomparedZtoZtheZsameZneuronZfr
omZtheZrightZear.Z-ZCORRECTZZANSWER-medial;Zsooner

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doesZsheZturnZherZheadZtowardZloudZnoises.ZAfterZseveralZappointmentsZwithZdoctors,ZtheZ
familyZisZinformedZthatZtheZgirlZhasZmalformedZhairZcells,ZbutZhasZfullyZfunctioningZauditoryZ
nerves.ZWhatZtypeZofZhearingZlossZdoesZthisZgirlZhave,ZandZwhatZwouldZbeZtheZbestZtreatm
entZoption?Z-ZCORRECTZZANSWER-sensorineuralZhearingZloss;ZcochlearZimplant

AZhuman'sZperceptionZofZpitchZcorrespondsZtoZtheZ_______ZofZaZsoundZwave;ZperceptionZ
ofZloudnessZcorrespondsZtoZtheZ_______ZofZaZsoundZwave.Z-ZCORRECTZZANSWER-
frequency;Zamplitude

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whenZtoZstopZbecauseZheZwasZunableZtoZperceiveZwhenZtheZfluidZreachedZtheZbrim.ZWhatZ
wouldZbeZaZplausibleZdiagnosisZforZthisZman?Z-ZCORRECTZZANSWER-
CerebralZakinetopsia

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eftZeyeZandZonlyZtheZleftZpupilZconstricts.ZWhichZofZtheZfollowingZregionsZisZmostZlikelyZdam
aged?Z-ZCORRECTZZANSWER-Edinger-WestphalZnucleus

AZmotorZpoolZ(asZopposedZtoZaZmotorZunit)ZconsistsZofZ-ZCORRECTZZANSWER-
allZofZtheZmotorZneuronsZthatZprojectZtoZaZgivenZmuscle

, aZpersonZhasZbilateralZdamageZtoZtheZmedialZlongitudinalZfasciculis.ZifZsheZundergoesZwar
mZwaterZirrigationZinZtheZrightZearZwhileZunconscious,ZwhichZoculomotorZresponseZwouldZs
heZshow?Z-ZCORRECTZZANSWER-slowZmovementZofZtheZleftZeyeZtowardZtheZleft

aZpersonZwithZdamageZtoZtheZdirectZmotorZpathwayZbutZanZintactZindirectZmotorZpathway,Z
wouldZhaveZtheZmostZdifficultyZ-ZCORRECTZZANSWER-writing

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heZhaveZtheZmostZtroubleZmakingZsenseZof?Z-ZCORRECTZZANSWER-speech

accordingZtoZtheZsizeZprinciple,ZinZwhichZorderZareZmotorZunitsZrecruitedZinZresponseZtoZinc
reasingZsynapticZinput?Z-ZCORRECTZZANSWER-S,ZFR,ZFF

AfterZstereociliaZmoveZtowardZtheZkinocilium,Z-ZCORRECTZZANSWER-
thereZisZincreasedZreleaseZofZtransmitterZfromZtheZhairZcell

AlthoughZtheZphenomenonZisZnotZwellZunderstood,ZtheZincreasedZmuscleZtoneZandZspastic
ityZthatZdevelopZafterZanZupperZmotorZneuronZinjuryZappearsZtoZbeZdue,ZatZleastZinZpart,ZtoZ-
ZCORRECTZZANSWER-increasedZresponsivenessZofZmotorZneuronsZtoZIaZafferentZinputs.




AsZmotorZunitZsizeZincreases,ZwhichZpropertyZofZtheZαZmotorZneuronZdecreases?Z-
ZCORRECTZZANSWER-excitability




asynchronousZfiringZofZmotorZneuronsZ-ZCORRECTZZANSWER-
providesZaZmeansZbyZwhichZaZpopulationZofZmotorZneuronsZcanZmaintainZconstantZforceZo
verZaZfiniteZtimeZinterval.

AxonsZfromZtheZlateralZgeniculateZnucleusZ(LGN)ZterminateZinZwhichZlayersZofZtheZprimaryZ
visualZcortex?Z-ZCORRECTZZANSWER-4AZandZ4C

BothZLGNZandZlayerZ4ZneuronsZinZprimaryZvisualZcortexZareZmonocularZ-
ZCORRECTZZANSWER-True




BothZtheZcochleaZandZtheZlabyrinthZ-ZCORRECTZZANSWER-
useZhairZcellsZinZmechanotransduction

corticalZneuronsZthatZreceiveZvestibularZinputZviaZtheZthalamusZ-ZCORRECTZZANSWER-
allZofZtheZabove

CorticospinalZaxonsZmostlyZ-ZCORRECTZZANSWER-
synapseZontoZspinalZlocalZcircuitZneurons

DuringZtheZflexion-
crossedZextensionZreflex,ZstimulationZwouldZleadZtoZ_______ZofZipsilateralZextensorZmuscl