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autorythmic cardiac impulses
The intrinsic conduction system consists _______________ ____________ cells that initiate and distribute _______________ throughout the heart.
The intrinsic conduction system coordinates heart activity by determining the direction and speed of ________________. This leads to a coordinated heart contraction.
The action potentials spread from the autorhythmic cells of the intrinsic conduction system (electrical event) to the ______________ cells. The resulting mechanical events cause a heartbeat.
Electrical events lead to mechanical events. For example, the P wave represents ____________ depolarization, which leads to atrial _____________.
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