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La fréquence cardiaque :A. Dépend de nombreux facteurs comme l'âge, le sexe, le poids mais aussi l'anxiété, le stresse et la joieB. Au repos, est régulée par l'influence prédominante du système nerveux parasympathique au niveau du noeud de Keith-FlackC. Subit une régulation chimique ioniqueD Vrai E faux

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