character: Ms. Sarah Chen
topic: The Role of Pacemaker Cells in Heart Function
grade: 11
subject: Science
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character: Mr. David Lee
topic: Understanding Cardiovascular Physiology
grade: 11
subject: Science
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character: Dr. Emily Patel
topic: Introduction to Cardiac Electrical Activity
grade: 11
subject: Science
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character: Ms. Laura Kim
topic: The Importance of Homeostasis in Heart Health
grade: 11
subject: Science
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