Introduction to Respiratory and Circulatory

Edit Answers
123456789101112131415161718192021222324
Across
  1. 4. muscular wall between chest and abdomen.
  2. 5. thin-walled sacs in the lung.
  3. 8. two in number (not the lungs).
  4. 10. Shared between respiratory and digestive systems.
  5. 12. thin membranes covering the
  6. 14. waste product produced in the body (2 words).
  7. 16. bones in the nose.
  8. 18. exchanged in the lungs for the answer to 15 down.
  9. 19. soft and spongy.
  10. 20. air in.
  11. 22. protects the entrance to larynx.
  12. 23. cavity.
  13. 24. flexible tube.
Down
  1. 1. tiny blood vessels in the lungs.
  2. 2. cartilages and muscles.
  3. 3. controls the breathing.
  4. 6. _______ cavity - contains hairs and special bones.
  5. 7. sense of smell.
  6. 9. average respiratory rate in a cow.
  7. 11. voice production.
  8. 13. in a bird (only in birds; 2 words).
  9. 15. trachea divides into these structures.
  10. 17. tiny hairs on cells which wave back and forth.
  11. 21. air out.