Question

Which of the following type is a reversible cell injury?

• A. Karyolysis
• B. Nuclear clumping
• C. Phagocytosis
• D. Cytoskeletal damage

Answer 1

The Correct Option is B

The question asks about the type of reversible cell injury among the given options. Reversible cell injury is a condition where the cell can recover after the removal of the stress or injurious stimulus. Let's analyze each option to determine the correct answer:

1. Karyolysis: This refers to the dissolution of the cell nucleus due to the enzymatic breakdown of DNA. Karyolysis is a form of irreversible cell injury and usually indicates cell death. Hence, this is not a reversible cell injury.
2. Nuclear clumping: This is characterized by the condensation of nuclear chromatin due to the cause of mild cell stress. Nuclear clumping is indeed a reversible change because the cell can return to its normal state if the stressor is removed. Therefore, this represents a reversible cell injury.
3. Phagocytosis: This is a process by which a cell engulfs particles such as bacteria or dead tissue. It is a normal cellular process in response to pathogens and is not a type of cell injury (reversible or irreversible). Hence, it does not fit the category of reversible cell injury.
4. Cytoskeletal damage: Damage to the cell's cytoskeleton can be either reversible or irreversible, depending on the extent and nature of the injury. However, it more commonly results in irreversible injury if the damage is significant. Thus, while some cytoskeletal changes might be reversible, they do not categorically fit the definition of reversible cell injury as clearly as nuclear clumping.

Based on the above analysis, the correct answer is Nuclear clumping, as it is a reversible cell injury. Removing the stressor allows the cell to potentially recover and return to its normal state.