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ÉTAPE 1 A 3: GENÈSE ET PROPAGATION D'UN PA MUSCULAIRE Relargage d'acétylcholine dans la fente synaptique:-arrivée du PA nerveux au niveau de la plaque motrice (au niv terminaison du neurone-moteur)-ouverture des canaux calciques voltage-dépendants (entrée Ca2+ ds terminaison nerveuse)-__________ de vésicules d'acétylcholineGénération du potentiel de plaque motrice (PPM):-Fixation de l'acétylcholine sur les récepteurs musculaires nicotinique à l'acétylcholine ___-________**(fixation sur 2 chaîne alpha)-ouverture des canaux cationique des N-AchR-entrée de ______ par gradient de concentration (milieu extraCellR—>intracellR)-génération d'une ___________ locale au niveau de la jonction neuromusculaire: _______

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