Certified Nursing Assistant (CNA) Practice Exam

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When a muscle atrophies, it:

  1. Becomes bigger and stronger

  2. Doubles in size

  3. Remains the same

  4. Becomes thinner and weaker

The correct answer is: Becomes thinner and weaker

Atrophy refers to the process by which muscles decrease in size and strength, often due to disuse, lack of stimulation, or injury. When a muscle atrophies, the muscle fibers become smaller, leading to a reduction in muscle mass and a loss of strength. This can result from prolonged inactivity, such as after a surgery or due to a sedentary lifestyle. Therefore, the correct response reflects the physiological changes that occur when atrophy happens. In contrast, the other responses suggest an increase in size or strength, which does not align with the characteristics of atrophied muscle tissue.

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