During haemorrhage, why does activation of the arterial chemoreceptor reflex, and the resultant tachypnoea, "mask" the bradycardia induced by the cardiac vagal C-fibre reflex?

Struggling to understand why the increase in ventilation causes a tachycardia that "masks" the bradycardia of the vagal C-fibre reflex in the heart, which as I understand it is activated earlier on during haemorrhage.

  • $\begingroup$ Welcome. Can you add some sources to your statements? $\endgroup$ – AliceD May 15 '20 at 10:31

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