Which of the following statements accurately describes hypertrophy?
Group of answer choices
- Hypertrophy results in an increase in the number of cells within an organ.
- Hypertrophy involves the replacement of normal cells with fibrous tissue.
- Hypertrophy typically results in cell death.
- Hypertrophy invariably increases the size of the organ.
The correct answer is Hypertrophy invariably increases the size of the organ.
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Explanation:
Hypertrophy refers to the increase in the size of individual cells, which leads to the enlargement of an organ or tissue. It occurs in response to increased demand or stimuli, such as increased workload (e.g., in skeletal or cardiac muscle) or hormonal signals (e.g., in the uterus during pregnancy).
- Hypertrophy does not involve an increase in the number of cells (which would be hyperplasia).
- It does not involve the replacement of cells with fibrous tissue (which would be fibrosis or scarring).
- Hypertrophy itself does not directly result in cell death, although cell injury can occur if the hypertrophy is excessive and sustained (e.g., in heart failure).
Thus, hypertrophy typically results in an increase in the size of the organ due to the enlargement of individual cells.
