the same experiments in baro and chemodenervated animals show that : respiratory depression due to fc 12 still occurs , but not through the arterial chemoreceptors ; tachycardia has a reflex origin : barodenervation reveals the negative chromotropic effect of fc 12 and increases the fall in arterial pressure , mainly due to the negative inotropic effect of fc 12 ; adrenaline is necessary for fc 12-induced arrhythmia : barodenervation suppresses tachycardia due to the release of endogenous epinephrine and abolishes any arrhythmia .
C0020649
fall in arterial pressure
C0014563
epinephrine