Chapter 11, Lesson 1

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Across
  1. 4. A thin, sticky film that builds up on teeth and leads to tooth decay.
  2. 6. Hardened plaque that hurts gum health and must be removed by a dentist.
  3. 8. The outermost layer of skin.
  4. 11. Word Definition
  5. 12. The skin’s inner layer that contains blood vessels, nerve endings, and glands.
Down
  1. 1. A skin condition caused by oil glands clogging hair follicles.
  2. 2. (UV) rays Invisible rays from the sun that can damage the skin.
  3. 3. A substance that gives skin its color and blocks some UV rays.
  4. 5. follicles Small sacs in the dermis from which hair grows.
  5. 7. A chemical that helps prevent tooth decay.
  6. 9. Tiny openings in the skin that allow perspiration to escape.
  7. 10. A condition with flaking skin on the scalp.