The Respiratory system

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Across
  1. 2. scientific term for white blood cell
  2. 6. the movement of gas from an area of high concentration to an area of low concentration.
  3. 7. Gas exchange occurs here
  4. 9. The large air passages that lead from the trachea
  5. 11. Known as the vocal cords
  6. 14. combination of hemoglobin with oxygen
  7. 15. muscles that are found between the ribs and they control rib movement.
  8. 16. a type of wbc which produces soluble proteins called antibodies
  9. 18. windpipe
  10. 19. Lungs
  11. 20. organelles which involve in respiration?
Down
  1. 1. scientific term for red blood cell
  2. 3. leaf-shaped flap in the throat that prevents food and water from entering the trachea and the lungs
  3. 4. bronchus branches out into smaller tubes
  4. 5. Muscle that moves up and down to push and pull air
  5. 8. the process of engulfing and destroying unwanted microorganisms that enter the blood
  6. 10. the term for unwanted microorganisms that enter the body
  7. 12. Located between nasal cavity & larynx
  8. 13. a type of wbc that makes up 70% of the wbc
  9. 17. iron-rich protein in the blood