character: Dr. Smith
topic: The Role of Electrical Signals in Heart Function
grade: 11
subject: Biology
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character: Mr. Johnson
topic: Introduction to Cardiac Physiology
grade: 11
subject: Biology
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character: Ms. Lee
topic: Understanding Heartbeat Rhythms
grade: 11
subject: Biology
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character: Dr. Patel
topic: The Impact of Electrical Potentials on Heart Muscle Cells
grade: 11
subject: Biology
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