Life Cycle Notes

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Created by
Thatus Licudan

Cards (10)

  • What stage of the E. histolytica life cycle occurs in the small intestine?
    = Excystation
  • How many motile trophozoites are produced from a single E. histolytica cyst?
    = Eight
  • Where do the trophozoites of E. histolytica settle in the human body?
    = Lumen of the large intestine
  • What is the primary method of replication for E. histolytica trophozoites?
    = Binary fission
  • Which of the following can result from the migration of E. histolytica trophozoites to other organs?
    • Rapid intestinal motility
    • Abscess formation
    • Encystation
    • Cyst formation
    = Abscess formation
  • In cases where trophozoites of E. histolytica do not return to the large intestine, the diagnosis relies on:
    = Serologic testing
  • At what stage of the life cycle does encystation occur in E. histolytica?
    = Lumen of the large intestine
  • How many nuclei are present in an E. histolytica cyst when cyst formation is complete?
    =  Four
  • How are infective cysts of E. histolytica passed out into the environment?
    = Through human feces
  • How long can E. histolytica cysts survive in a feces-contaminated environment?
    = Up to 1 month