Circulation and Respiration

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Across
  1. 6. The many little branches of respiratory system
  2. 9. Movement of the particles from an area of high concentration to low concentration
  3. 12. Keeps blood from flowing backwards
  4. 13. The grape like clusters of air sacs in the lungs
  5. 16. ventricle, Pumps blood to the lungs
  6. 18. The tube that connects the throat and bronchi (hint: Fork in the road)
  7. 19. Small blood vessels with thin walls that are wrapped around alveolares
Down
  1. 1. What we breathe in
  2. 2. The two large lightweight organs of the respiratory system
  3. 3. atrium, Receives blood from all the parts of the body
  4. 4. dioxide, What we breathe out
  5. 5. 90% water 55% fluid 45% cells and 10% sugar, waste, and nutrients
  6. 7. Blood cells, Contains hemoglobin which gives its red color
  7. 8. ventricle, Pumps blood to all the parts of the body
  8. 10. A type of blood cell that has no nucleus
  9. 11. Always carries deoxygenated blood towards the heart
  10. 14. atrium, Receives blood from the lungs
  11. 15. The large band of muscle that controls the size of the chest cavity (hint: at the bottom of the rib cage)
  12. 17. Always carries blood away from the heart