While in the hospital recovering from her heart attack Ms. F. developed a condition known as atrial fibrillation, in which the myocytes of the atria depolarize and contract individually. How are the cells of the heart supposed to contract? (Hint: Think about the functions of the intercalated discs.) Why would it impair the functions of the heart as a whole to have cardiac myocytes contracting individually?
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While in the hospital recovering from her heart attack Ms. F. developed a condition known as atrial...
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