Factors Affecting Histopathology Fixation Duration
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Questions and Answers

What is the purpose of placing cotton or cotton balls inside the open organ during fixation?

  • To facilitate faster fixation (correct)
  • To increase the sample size
  • To soften the tissue
  • To add color to the sample
  • How are hard tissues like nails and bones prepared for fixation?

  • Heated in an oven
  • Exposed to sunlight
  • Washed in running water and immersed in tissue softeners (correct)
  • Dipped in oil
  • What is the classification of fixatives based on their function?

  • Liquid and solid
  • Transparent and opaque
  • Biological and chemical
  • Additive and non-additive (correct)
  • Which fixative is described as becoming a part of the tissue?

    <p>Formalin</p> Signup and view all the answers

    What distinguishes compound fixatives from simple fixatives in terms of composition?

    <p>Compound fixatives are made of two or more fixatives, while simple fixatives are single component.</p> Signup and view all the answers

    What factor hastens or speeds up the duration of fixation?

    <p>Agitation</p> Signup and view all the answers

    Which factor retards or slows down fixation?

    <p>Fibrous tissue samples</p> Signup and view all the answers

    What is the most ideal specimen to fixative ratio according to the text?

    <p>1:20</p> Signup and view all the answers

    Which special consideration is mentioned for brain fixation?

    <p>Suspended in whole and tied</p> Signup and view all the answers

    What enhances the infiltration of fixatives in solid tissues like the uterus?

    <p>Cutting open the tissue</p> Signup and view all the answers

    In what range is the specimen to fixative ratio for expensive stain like osmium tetroxide set?

    <p>1:5-10 times</p> Signup and view all the answers

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