Lecture 1.1c - Cell injury and cell death 1
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Questions and Answers

What is the primary characteristic that distinguishes gangrene from other types of necrosis?

  • Caused by reduction in arterial blood flow
  • Visible to the naked eye (correct)
  • Result of loss of arterial blood supply
  • Modified by infection with a mixed bacterial culture
  • What type of necrosis is associated with dry gangrene?

  • Ischaemic necrosis
  • Liquefactive necrosis
  • Coagulative necrosis (correct)
  • Caseous necrosis
  • What is the term used to describe an area of necrotic tissue resulting from loss of arterial blood supply?

  • Ischaemia
  • Gangrene
  • Necrosis
  • Infarction (correct)
  • Which type of gangrene is characterized by the production of gas by anaerobic bacteria?

    <p>Gas gangrene</p> Signup and view all the answers

    What is the primary difference between wet gangrene and dry gangrene?

    <p>Presence of air exposure</p> Signup and view all the answers

    Which of the following is NOT a type of gangrene?

    <p>Ischaemic gangrene</p> Signup and view all the answers

    Study Notes

    Gangrene, Infarction, and Infarct

    • Gangrene is a clinical term describing necrosis visible to the naked eye, not a type of necrosis itself.
    • Infarction is necrosis caused by a reduction in arterial blood flow, which can result in gangrene.
    • Infarction is also an area of necrotic tissue resulting from a loss of arterial blood supply, also known as an area of ischemic necrosis.

    Types of Gangrene

    • Dry gangrene: necrosis modified by exposure to air, characterized by coagulative necrosis, resulting in blackening and desiccation of the affected area.
    • Wet gangrene: necrosis modified by infection with a mixed bacterial culture, characterized by liquefactive necrosis, resulting in a foul-smelling, oozing affect.
    • Gas gangrene: a type of wet gangrene where the infection is with anaerobic bacteria that produce gas.

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    Description

    Understand the differences between gangrene and infarction, including their causes, effects, and characteristics in the context of necrosis and tissue damage.

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