What prevents the dramatic increase in venous return that occurs during exercise from damaging the cardiac myocytes?
A. The exercise demand on the heart causes it to stiffen, preventing overstretch.
B. The pericardium acts as a limit on the amount of stretch.
C. The increased heart rate limits filling time.
D. Venous return is not sufficient to stretch the heart very much.
Answer: C. The increased heart rate limits filling time.
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Fill in the blank(s) with the appropriate word(s).
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