What term refers to the heart's ability to initiate its own electrical impulse?

Name: What term refers to the heart's ability to initiate its own electrical impulse?
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Automaticity refers to the heart's ability to generate its own electrical impulses, which determines its rhythmicity. Arrhythmia refers to an abnormal heart rhythm, while ectopy refers to an electrical impulse that originates outside of the normal location in the heart.

What Term Refers to the Heart's Ability to Initiate Its