NU643 WEEK 4 QUESTIONS WITH
CORRECT ANSWERS 2025
TheoriesQofQschizophrenia.Q-QcorrectQanswerQ-
elevationsQofQdopamine,QepigeneticsQ(genesQbeingQturnedQonQandQoffQdueQtoQenvironment),Qenmda/Qglut
amateQdefectiveQgenesQinherited-QenvironmentalQpressuresQturnQonQdefectiveQgenes
MesocorticalQdopamineQpathwayQ-QcorrectQanswerQ-
negQsymptoms:Q5QasQalogia,Qavolition,Qasociality,Qanhendonia,QaffectiveQblunting,QvtaQtoQprefrontalQcortex
:QcognitiveQchanges,QslowingQofQthoughtQ(lowQlevelsQofQdopamineQinQmesocorticalQpathway),QdrugsQtarge
tQthisQareaQtoQincQdopamineQ(becauseQthereQisQlessQdopamine)
TuberoinfundibularQdopamineQpathwayQ-QcorrectQanswerQ-
incQprolactin,QdueQtoQtheQhypothamus,QblocksQdopamine,QwhichQinQturnQincreasesQprolactinQ(inverseQrela
tionshipQwithQdopamineQ(amenorrhea,QgalactorrheaQ(milkQinQbreast)-risperidone
NigrostriatalQdopamineQpathwayQ-QcorrectQanswerQ-
movementQdisorders:QtardiveQdyskinesia,QextrapyramidalQsymptoms,Qparkinsons's,QslowQbrady-
dyskinesia,Qtremors
MesolimbicQdopamineQpathwayQ-QcorrectQanswerQ-
positiveQsymptoms:Q(hallucinations,QrapidQspeech,Qdelusions)QhyperactivityQinQthisQpathway.QTheQmesoli
mbicQpathway,QsometimesQreferredQtoQasQtheQrewardQpathway,QisQaQdopaminergicQpathwayQinQtheQbrain.
Conventional/typicalQantipsychoticsQ-QcorrectQanswerQ-
haloperidolQandQchlorpromazineQ(1stQgeneration)QtendQtoQblockQdopamineQd2QreceptorsQinQallQofQtheQdo
paminergicQpathwaysQofQtheQbrain.
AtypicalQ2ndQgenerationsQ-QcorrectQanswerQ-
lessQeps,QlessQmovementQdisorders,QlessQsideQeffects;QnonselectivityQofQreceptorQsites,QserotoninQ(5ht)Qbl
ockerQalsoQ(stimulatesQdopamineQreleaseQfurtherQdownQinQtheQbrain),QdopamineQblockerQ(dopamineQisQn
otQblockedQasQfullyQasQconventionalQantipsychotics)
EpsQ-QcorrectQanswerQ-
causedQbyQblockingQofQdopamineQd2QreceptorsQ(risperidoneQinc'dQriskQofQepsQinQhighQdoses)
CORRECT ANSWERS 2025
TheoriesQofQschizophrenia.Q-QcorrectQanswerQ-
elevationsQofQdopamine,QepigeneticsQ(genesQbeingQturnedQonQandQoffQdueQtoQenvironment),Qenmda/Qglut
amateQdefectiveQgenesQinherited-QenvironmentalQpressuresQturnQonQdefectiveQgenes
MesocorticalQdopamineQpathwayQ-QcorrectQanswerQ-
negQsymptoms:Q5QasQalogia,Qavolition,Qasociality,Qanhendonia,QaffectiveQblunting,QvtaQtoQprefrontalQcortex
:QcognitiveQchanges,QslowingQofQthoughtQ(lowQlevelsQofQdopamineQinQmesocorticalQpathway),QdrugsQtarge
tQthisQareaQtoQincQdopamineQ(becauseQthereQisQlessQdopamine)
TuberoinfundibularQdopamineQpathwayQ-QcorrectQanswerQ-
incQprolactin,QdueQtoQtheQhypothamus,QblocksQdopamine,QwhichQinQturnQincreasesQprolactinQ(inverseQrela
tionshipQwithQdopamineQ(amenorrhea,QgalactorrheaQ(milkQinQbreast)-risperidone
NigrostriatalQdopamineQpathwayQ-QcorrectQanswerQ-
movementQdisorders:QtardiveQdyskinesia,QextrapyramidalQsymptoms,Qparkinsons's,QslowQbrady-
dyskinesia,Qtremors
MesolimbicQdopamineQpathwayQ-QcorrectQanswerQ-
positiveQsymptoms:Q(hallucinations,QrapidQspeech,Qdelusions)QhyperactivityQinQthisQpathway.QTheQmesoli
mbicQpathway,QsometimesQreferredQtoQasQtheQrewardQpathway,QisQaQdopaminergicQpathwayQinQtheQbrain.
Conventional/typicalQantipsychoticsQ-QcorrectQanswerQ-
haloperidolQandQchlorpromazineQ(1stQgeneration)QtendQtoQblockQdopamineQd2QreceptorsQinQallQofQtheQdo
paminergicQpathwaysQofQtheQbrain.
AtypicalQ2ndQgenerationsQ-QcorrectQanswerQ-
lessQeps,QlessQmovementQdisorders,QlessQsideQeffects;QnonselectivityQofQreceptorQsites,QserotoninQ(5ht)Qbl
ockerQalsoQ(stimulatesQdopamineQreleaseQfurtherQdownQinQtheQbrain),QdopamineQblockerQ(dopamineQisQn
otQblockedQasQfullyQasQconventionalQantipsychotics)
EpsQ-QcorrectQanswerQ-
causedQbyQblockingQofQdopamineQd2QreceptorsQ(risperidoneQinc'dQriskQofQepsQinQhighQdoses)