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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Calcium is stored in
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The correct answer is  Calcium is stored in sarcoplasmic reticulum in the skeletal and cardiac muscles Calcium plays a major role in muscle contraction Ref:Guyton and Hall textbook of medical physiology 12th edition,page number: 85 ,86,87