Zoology Chapter 40 Crossword

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Across
  1. 3. The coiled middle portion of the small intestine
  2. 4. Swimming, tailed larva that hatch from fertilized eggs
  3. 6. A small bone that extends between the tympanic membrane and the inner ear
  4. 7. Order of salamanders
  5. 10. A membrane that holds the small intestine in place
  6. 11. Adaptation in an ancestral group that allows a shift to new functions which are later favored by natural selection
  7. 13. Used to transmit sounds
  8. 14. Order of frogs and toads
  9. 15. The upper portion of the small intestine
  10. 16. A transparent moveable membrane covering the eyes
  11. 17. Carries deoxygenated blood from the heart to the lungs and back to the heart
  12. 18. Order of caecilians
Down
  1. 1. Respiration through the lungs
  2. 2. After the male frog climbs onto the female's back, he grasps her firmly in this embrace until she lays her eggs.
  3. 5. Respiration through the skin
  4. 8. A place where wastes exit the body
  5. 9. Carries oxygenated blood form the heart to the body and back to the heart
  6. 12. Supplies lubricant that keeps the skin moist in air