circulatory system

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Across
  1. 5. a large artery through which oxygenated blood is pumped
  2. 7. moves blood to and around parts of the body
  3. 9. living cells in the blood that transport oxygen to all other living cells in the body
  4. 12. lower right section of the heart
  5. 14. blood vessels that carry blood back to the heart
  6. 15. the red pigment in red blood cells
  7. 17. vessels that transport oxygenated blood from arteries to the capillaries
  8. 18. hollow tubes with thick walls carrying blood
  9. 19. through the heart in a specific pathway
Down
  1. 1. upper right section of the heart
  2. 2. upper left section of the heart
  3. 3. the vessel through which oxeygenated blood travels from the heart to the lungs
  4. 4. lower left section of the heart
  5. 6. a form of energy released during cellular respiration
  6. 7. the chemical reaction involving oxeygen
  7. 8. a muscular organ that pumps blood through the circulatory system
  8. 10. a gas in the air that animlas need to breathe
  9. 11. minute tubes carrying blood to body cells
  10. 13. a gas in the air produced by respiration
  11. 16. a simple carbohydrate