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Ch 34 Quiz 2
34.3 Q1: The (a)_____________________ acts as the pacemaker of the heart. It initiates the heartbeat by generating electrical impulses. The electrical impulses pass to the (b)_____________________ which relays the impulses to the ventricles along the septum.
(a) AV node；(b) SA node
(a) SA node；(b) AV node
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