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La structure cerebrale

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De quoi est constitué la structure cérébrale chez l’humain

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  • April 9, 2021
  • 4
  • 2020/2021
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Les différentes structures cérébrales

LE TRONC CEREBRALE ( LA ZONE D' ECHANGE)


Il lie le cerveau
,
le cervelet et la moelle épinière



dde.efnanansitgefda.es avg.q.gegedsefntdesanf.%9e.net?YIm.eaEt:pi!
c'est une
zone
ères
de relais

Il a un rôle vital par les fonctions essentiels qu' il régule
( respiration rythme cardiaque )
-




Il est constitué de 3 parties ( du bas vers le haut ) :




- le bulbe rachidien (ou myél encéphale )
- le pont de Variole ( ou protubérance annulaire ou métencéphale )
le ( ou pédoncules cérébraux mésencéphale )
-

tegmentum ou




A du bulbe rachidien la substance
partir , grise n' est plus continue
( comparaison moelle épinière ? Elle
forme plusieurs noyaux disposés en

colonnes être sensitifs moteurs
qui peuvent ou .




-

Noyau sensitif reçoit : les axones des neurones
afférents en
provenance
des périphéries et de la moelle épinière
-

Noyau moteur : contient des méta neurones dont les axones sont des

afférences motrices la moelle épinière et les
se
dirigeant vers

périphéries

l' organisation de ces
noyaux
est en rapport avec celle des he nerfs
crâniens qui sont
homologues aux
nerfs rachidiens




Extérieurement ,
on trouve les sorties des nerfs
crâniens ( sauf olfactif I et visuel I ,
issus

du cerveau donc inclus dans le SNC )



÷!: .ûû în!:c::* ¥
-




partie au
.




.




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