Nematode Expertise
3 Questions
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Nematode Expertise

Created by
@WondrousChrysoprase

Questions and Answers

Which of the following is true about nematodes?

  • Aphasmids have caudal chemoreceptors. (correct)
  • They have a life cycle consisting of only two stages.
  • They cannot infect extraintestinal tissues.
  • They do not have distinct physical characteristics for males and females.
  • What is the difference between oviparous and ovoviviparous/oviviparous nematodes?

  • Oviparous nematodes lay eggs in an unsegmented stage, while ovoviviparous/oviviparous nematodes lay eggs in a segmented stage (correct)
  • Oviparous nematodes lay eggs in a segmented stage, while ovoviviparous/oviviparous nematodes lay eggs in a segmented and unsegmented stage
  • Oviparous nematodes lay eggs in a segmented stage, while ovoviviparous/oviviparous nematodes lay eggs in an unsegmented stage
  • Oviparous nematodes do not lay eggs, while ovoviviparous/oviviparous nematodes lay eggs in a segmented stage
  • Which of the following is true about the Triad of infection or Unholy 3?

  • It consists of Capillaria, Ascaris, and Strongyloides.
  • It consists of Ascaris, Strongyloides, and Hookworm.
  • It consists of Enterobius, Ascaris, and Trichuris.
  • It consists of Hookworm, Ascaris, and Trichuris. (correct)
  • Study Notes

    1. There are separate sexes in nematodes with distinct physical characteristics for males and females.
    2. Nematodes have a life cycle consisting of egg, larval, and adult stages.
    3. Aphasmids lack phasmids or caudal chemoreceptors, while phasmids have caudal chemoreceptors.
    4. Nematodes can be oviparous, ovoviviparous, or viviparous/larviparous.
    5. The frequency of nematodes in the intestine is EAT (Enterobius, Ascaris, Trichuris) for small intestines and CASH (Capillaria, Ascaris, Strongyloides, Hookworms) for large intestines.
    6. Some nematodes migrate from the heart to the lungs, and this is known as the ASH (Ascaris, Strongyloides, Hookworm) migration.
    7. Some nematodes can infect extraintestinal tissues such as lymphatics, subcutaneous tissues, muscles, and meninges.
    8. The Triad of infection or Unholy 3 is HAT (Hookworm, Ascaris, Trichuris).
    9. Amphid are cephalic chemoreceptors in nematodes.
    10. Oviparous nematodes lay eggs in an unsegmented stage, while ovoviviparous/oviviparous nematodes lay eggs in a segmented stage.

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    Description

    Take this quiz to test your knowledge about the fascinating world of nematodes! From their distinct physical characteristics to their life cycle stages and modes of reproduction, this quiz covers it all. You'll also learn about nematode infections and their unique features such as cephalic and caudal chemoreceptors. Test your understanding of the HAT and EAT/CASH triads and the ASH migration. Are you ready to become a nematode expert? Let's get started!

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