Chapter 16- Circulation and Respiration; By: Jose Sanchez

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Across
  1. 1. Prevents blood from flowing/going backward
  2. 6. The circulation of blood between the heart and the rest of the body
  3. 7. A blood vessel that carries blood away from the heart
  4. 8. The throat
  5. 9. When the heart is too weak to pump enough blood to meet the body's needs
  6. 11. The cause of when the heart contracts, and blood is pushed out of the heart into the arteries
  7. 13. The windpipe
  8. 15. What your heart, blood, and blood vessels ,make up
  9. 18. Blood cells that keep you healthy by destroying pathogens
  10. 20. When heart muscle cells do not get enough blood
  11. 21. A connective tissue made up of plasma, red blood cells, platelets, and white blood cells
  12. 23. A tiny blood vessel that allows exchanges between body cells and blood
  13. 24. Hollow tubes that blood travels through
  14. 25. A mixture of water, minerals, nutrients, sugars, proteins, and other substances
  15. 26. A blood vessel that carries blood back to the heart
Down
  1. 2. Tiny air sacks in the lungs
  2. 3. Each lower chamber
  3. 4. The group of organs that take in oxygen, and remove carbon dioxide
  4. 5. The circulation of blood between your heart and lungs
  5. 10. Each upper chamber
  6. 12. The part of the throat that contains the vocal cords
  7. 14. The process by which the body gains and uses oxygen and gets rid of carbon dioxide and water
  8. 16. Supply oxygen for every living cell in your body
  9. 17. An organ made mostly of cardiac muscle tissue
  10. 19. Pieces of larger cells found in bone marrow
  11. 22. One of the two tubes that connect to the lungs