Increased functional demand on the heart produces increased size of the myocardium by _______________?
Correct answer: B. Hypertrophy
- A. Hyperplasia
- B. Hypertrophy
- C. Fatty infiltration
- D. Increased amounts of fibrous connective tissue
Explanation
Increased workload enlarges existing cardiac muscle cells, producing hypertrophy. Adult cardiac myocytes have very limited ability to divide, so hyperplasia is not the usual mechanism.
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