Atrophy Definition and Causes
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Questions and Answers

What is the defining characteristic of metaplasia?

  • It is irreversible
  • It always leads to cancer
  • It is caused by genetic mutations
  • It involves conversion of one cell type to another (correct)

    • Which of the following statements about dysplasia is correct?

  • It leads to tissues with uniform cell size and shape
  • It may be a precursor of cancer (correct)
  • It occurs in response to acute infection
  • It is reversible

    • In the context of cellular injury, what happens in irreversible injury?

  • Cells reach a point of no return and progress to cell death (correct)
  • The injury is always reversible
  • Cells return to normal when the injurious agent is removed
  • Cell alterations regress and disappear

    • Which type of cellular injury involves exposure to temperature extremes like burn injuries?

    <p>Physical injury</p> Signup and view all the answers

    What characteristic distinguishes compensatory mechanism in the liver after surgical removal of a portion?

    <p>Increase in functional capacity of the liver</p> Signup and view all the answers

    What is the main difference between atrophy and hypertrophy?

    <p>Atrophy decreases cell size, while hypertrophy increases cell size.</p> Signup and view all the answers

    Which condition may lead to pathologic atrophy?

    <p>Peripheral arterial disease</p> Signup and view all the answers

    What distinguishes hyperplasia from hypertrophy?

    <p>Hyperplasia involves an increase in the size of the cell, while hypertrophy involves an increase in cell number.</p> Signup and view all the answers

    In which scenario might atrophy be considered a normal process?

    <p>Atrophy following prolonged bed rest</p> Signup and view all the answers

    Why does hypertrophy not occur in nerve cells?

    <p>Nerve cells lack the capacity for mitosis.</p> Signup and view all the answers

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