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Biologie humaine 3

chapitre 9 +10

QuestionAnswer
Qu'es ce qu'un nerf spinal nerf rattaché à la moelle épinière
Comment les nerfs spinaux sont-ils rattachés à la moelle épinière Ils se rattachent pas les filets radiculaires d'une racine dorsale et ventrale.
Les axones des neurones sensitifs font synapse avec les corps cellulaires des interneurones dans.......de la substance grise de la moelle épinière la corne dorsale
Quels est le premier et dernier élément d'un réflexe spinal le récepteur sensoriel et effecteurs musculaire
SNS = système nerveux somatique
SNA = système nerveux autonome
effecteurs SNS muscles squelettiques
effecteurs SNA muscles lisses, muscles cardiaques et glandes
type de régulation SNS/SNA généralement volontaire = sns involontaire = sna
degrés de myélinisation des axones sns = fort sna = faible
effets sns= toujours excitateur sna = parfois inhibiteur parfois excitateur
Fonctions du SNAP Repos/ digestion/maintien de l'homéostasie/pas de stress
Focntions du SNAS Situation de stress, réaction de lutte ou de fuite
Un neurone cholinergique : il secrete de l'ACh
Laquelle des structures est innervée presque exclusivement par la division sympathique les vaisseaux sanguins
Created by: 529485345
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