Limbic system Flashcards
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limbic system is ?>
C shaped subcortical strucures responsible for
Memory
Emotions
Incentive behavior
MENTION Parts of limbic system
Cortex:
LHp
Limbic lobe
Hippocampal formation
Prefrotnal cortex
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Nuclei :
HAT
Hypotahalmus
anterior nucleus of thalamus
Amygdloid nucleus
The septal areas
Limbic lobe formead of ?
SCIP
Subcllosal areas
Cingulate gyreus
Issthmus
parahippcampus
Hippocampal fomration =
HDE
Hippocampus
dentate gyreus
Entorhinal cortex of parahippocamapl gyrus
Hippocampus lies…… to the parahippocamapl gyrus in the ,,,,and ,,,,,wall of inferior horn of ,,,,ventricle
Medial
Floor and medial
lateral ventricle
Extension of hippocamus from ?
Amygdala to splenium
Fibers of hippocampus
Alveus
Fimbria
Fronix
as sea horse
Fronix conncets?
Hippocampus with Mammilary bodies and septal areas of hypothalamus
hippocamap commisure conncets
two fronix
Body of fornix connected to undersurface corpus callosum by
Septum palliucium
The fimbria of fornix form
posterior column then bodu then anterior columns to mamillary bodies and septal areas
Amydala is a group of unclei close to tail of ,,,,,,,, nucleus and ,,,,,,,to hippocampus at tip of inferior horn of ,,,,,,,,,,,,?
Connected with processinig ……………
Larger in …….. for ……….
The main output is ,,,,,,,,,,,,,,curving around,,,,,,,,,,to terminate on ,,,,,&,,,,,,&<,,,,,,,,
Caudate
Anterior
Lateral ventricle
Feelings of anger and fear
Males for sexual dimorphism
StriaTerminalis
Thalamus
Hypothalamus,septal areas and fronix
Septal areas formed of sparse …matter that lies in,,,,,, just front of the lamina terminalis
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connectied to hippocampus via ,,,,,,
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Imp ?
Grey
Septum pellucidum
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fronix
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Center of pleasure
Secretion of Ach for memory consolidation
The role of limbic sstem in memory consolidation needs perserved integrity of ?
Hippocamapl formation
Papez circuit
papez circuit
Ex:
visual stimuluts go to viusal associaton cortex then cingulate gurys to parahippcampus to hippocampus circuting potentinating memory then through fronix to mamillary bodies then through mamaillothalamic tract to anterior thalamic Nucleus then to cingulat through thalamogeniculate then to asscocaiton cortex to be part of the brain long memory
Amydala is responsible for ,,,,,overactivity for ….,…….
Connections :
Input from ,,,,,, invloving painful stimuli perception
Reciprocal connection with ,,,,,,&,,,,,,,, cortex (cortical control preventing amydalal from ….?)
Output flow is ?»>
connectin amydala to ……….. for ……….
and ………. for……..
Tha amydala is invovled in fear conditioning
Sympathatic- figh and flight
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Brainstem
Frontal and Tempral
Hijacking the brain
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Stria Terminalis
septal areas for inhibtio
Hypothalmus for visceral expression of unpleasent emotions
Removal of temporal lobe in monkeys leading to ?
symptoms mention
Kluver bucky sundrome
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Docility
Hyperphagia
hyper sexulaity
Memory affection
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isolated removal like in Uncontrolled agressive behavior casuse the symptoms without memory affection
the role of septal nuceli
stimualtion of septal nuclei casuing orgasm like sensation
Septal connections
Septal areas connected:3H connections
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1-and amygdloid with hypothalamus via medial longitudianl bundles
2-Hebanular nuclei via Stria medullaris thalami or Habenular stria
3-hippocampus through forinx
Lesion to septal areas casues?
septal rage
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