Respiratory System

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Across
  1. 1. Toward the front
  2. 3. the middle portion of the thorax
  3. 5. Face Down
  4. 8. The middle space of the thorax is filled with the _______ and is more on the left side of the body
  5. 9. The lungs are housed in this
  6. 12. Descends from behind the ear at the mastoid process
  7. 15. Close to the center
  8. 16. the thoracic portion of the vertebral column has how many vertebrae
  9. 18. exchange of gas between organism & environment
  10. 19. large muscles covering the upper back and neck
  11. 20. Bone to bone connection of tissue aggregates
Down
  1. 2. the amount of opening in the diaphragm
  2. 4. Left/Right, Lateral Portions
  3. 6. A type of joint that has fluid as cushion
  4. 7. The study of the structure of an organism
  5. 10. toward the bottom
  6. 11. toward the backbone/away from the front of the body
  7. 13. Long collapsed tube posterior to the trachea
  8. 14. ______ inspiration involves minimal muscular activity
  9. 17. tissue that makes up the skin and mucous membrane