National League for Nursing (NLN PAX) Practice Exam

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What happens to muscles when they atrophy?

  1. They strengthen

  2. They waste away

  3. They grow larger

  4. They become more flexible

The correct answer is: They waste away

When muscles atrophy, they waste away due to a decrease in size and mass. This phenomenon often occurs when muscles are not used for prolonged periods, such as during immobilization after an injury, in certain chronic illnesses, or as a result of aging. The muscle fibers shrink, leading to a reduction in overall muscle strength and function. This process can negatively impact a person's ability to perform daily activities and can contribute to overall weakness. Understanding atrophy is important, especially in fields related to healthcare, rehabilitation, and fitness, as it emphasizes the necessity of regular movement and muscle engagement to maintain muscle health and strength.