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In the Heart, the Stimulus for Hypertrophy Is Usually Chronic

Question 24

Multiple Choice

In the heart, the stimulus for hypertrophy is usually chronic hemodynamic overload, resulting from either hypertension or faulty valves. During cardiac muscle hypertrophy, ____ myosin heavy chains are replaced by ____myosin heavy chains, which leads to ____ ATPase activity and a slower, more efficient contraction.


A) !;"; Increased
B) !;"; Decreased
C) ";!; Increased
D) ";!; Decreased

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