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Class notes

NEUROANATOMY

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Neuroanatomy of the brain

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  • November 8, 2022
  • 1
  • 2020/2021
  • Class notes
  • Jc
  • Brain
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ateralization of CorticalFunctioning
eachhemispherehasabilitiesnotsharedbyotherhemispherestillcommunicate
cerebraldominancelanguagedominanthemisphere
90 ofpeople leftdominantfor languagemathlogic
rightdominant for visualspatialskillsintuitionemotion artmusic
left
cerebral dominance righthanded rightdominance lefthanded or ambidextrous

CerebralWhiteMatter
communication between cerebralareascortexlower Cns
commisuralfibersconnectcorrespondingareas between hemispheres
associationfibersconnectionwithinhemispheres
gyrilobes
projectionfibersbetweencortex and CNS vertical


BasalNuclei

Caudatenucleusputamenglobuspallidus
inputfrom cerebralcortexsubcorticnucleieach
other
influencemusclemovements directed byPMC
startingstoppingmonitoringmovementintensity
cognitionemotions filtering

Huntington'sDisease
mutant huntingtin protein accumulates degeneration of Bnrcortex
unable to control thoughtsfeelingsmovements ascaudatedeteriorates frontallobeconnection lost

arkin
son'sDisease
degeneration ofdopaminereleasingneurons in substantianigra
subnigra tremorsrigidmuscles
overactive



i ncephalon
e
halamushypothalamus epi
thalamus encloses 3rdventricle

Thalamus
2masses ofgraymatterheldtogetherbyinterthalamicadhesion
manydifferent
nucleiafferentsensoryimpulsesconverge on thalamus gateway to cerebralcortex

hypothalamus
autonomiccontrol bpheartrate Gl respiration
behaviour heart of limbicsystem
emotionalresponses
regulation of bodytempfoodintakewaterbalancethirstsleepcycle
hungersatietyADHreleasethirstsuprachiasmaticnucleus
endocrinesystemreleasehormonesproduceADHoxytocin 2nuclei

Epi
thalamus
pinealglandsecretesmelatonin
choroidplexusformsCSF

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