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10 cards from this deck
Heart's own blood supply to cardiac muscle
Four (two atria, two ventricles)
Separates left & right sides, prevents blood mixing
Pumps blood throughout entire systemic circulation
Contraction phase of cardiac cycle
Heart initiates own contractions without nervous stimulation
Right atrium; natural pacemaker, initiates heartbeat
Allows atria to finish contraction before ventricles contract
Atrial depolarisation causing atrial contraction
Heart rate exceeding 100 bpm (too fast)
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