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Réflexe myotatique

Fonctionnement du réflexe myotatique

Qu'est ce que le réflexe myotatique? La contraction involontaire d'un muscle à son étirement.
Quels sont les récepteurs sensibles à l'étirement du muscle? Les fuseaux neuromusculaires.
Combien de neurones interviennent dans le réflexe myotatique? Deux: le neurone sensitif et le motoneurone (ou neurone moteur).
Pourquoi le réseau neuronique du réflexe myotatique est-il dit monosynaptique? Car il est formé de deux neurones en contact par une seule synapse.
Où est situé le corps cellulaire du motoneurone? Dans la substance grise de la moelle épinière.
Quels sont les effecteurs du réflexe myotatique? Les fibres musculaires.
Quel centre nerveux est impliqué dans le réflexe myotatique? La moelle épinière
Created by: Tourret



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