Lesson plan

Root sheath

Root sheath may refer to any of these biological structures: *Epithelial root sheath, a proliferation of epithelial cells located at the cervical loop of the enamel organ in a developing tooth *Root sheath (hair), the inner or epidermic coat of the hair follicle that is closely adherent to the root of the hair **Inner root sheath **Outer root sheath *Seed root sheath, a protective layer of tissue that surrounds the radicle in monocotyledon seeds

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Article summary

Root sheath may refer to any of these biological structures: *Epithelial root sheath, a proliferation of epithelial cells located at the cervical loop of the enamel organ in a developing tooth *Root sheath (hair), the inner or epidermic coat of the hair follicle that is closely adherent to the root of the hair **Inner root sheath **Outer root sheath *Seed root sheath, a protective layer of tissue that surrounds the radicle in monocotyledon seeds

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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