Circulation and Ventilation

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Across
  1. 4. process by which the air is moved in and out of the lungs
  2. 6. contracts and flattens during inhalation
  3. 7. blood vessel with a thick outer wall and narrower lumen
  4. 8. valve malfunction can lead to...
  5. 11. engulf and digest foreign particles like bacteria
  6. 12. a 4 chambered organ
  7. 13. name of the muscles in between the ribs
Down
  1. 1. used to correct irregular heart beating
  2. 2. clots the blood (In platelets)
  3. 3. produce and secrete antibodies
  4. 5. bones protecting the lungs
  5. 9. a device used to prevent coronary heart disease
  6. 10. wall separating the two sides of the heart