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  • Question 1 - 13 year old girl developed sun burnt cheeks after spending the day playing...

    Correct

    • 13 year old girl developed sun burnt cheeks after spending the day playing on the beach. What is the underlying mechanism to her injury?

      Your Answer: Free radical injury

      Explanation:

      Free radicals are a by-product of chemical reactions with an unpaired electron in their outer most shell. They are capable of causing wide spread damage to cells. They can cause autolytic reactions thereby converting the reactants into free radicals. By absorbing sun light, the energy is used to hydrolyse water into hydroxyl (OH) and hydrogen (H) free radicals which can cause injury by lipid peroxidation of membranes, oxidative modification of proteins and damage to the DNA structure.

    • This question is part of the following fields:

      • Cell Injury & Wound Healing; Dermatology
      • Pathology
      14.7
      Seconds

  • Question 2 - The histological exam of a tuberculous granuloma shows a periphery of multinuclear giant...

    Correct

    • The histological exam of a tuberculous granuloma shows a periphery of multinuclear giant cells, with a central area of:

      Your Answer: Caseous necrosis

      Explanation:

      Granulomas with necrosis tend to have an infectious cause. The chronic infective lesion in this case typically presents with a central area of caseous (cheese-like) necrosis. Foam cells are the fat-laden M2 macrophages seen in atherosclerosis

    • This question is part of the following fields:

      • Cell Injury & Wound Healing; Dermatology
      • Pathology
      14.7
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Cell Injury & Wound Healing; Dermatology (2/2) 100%
Pathology (2/2) 100%
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