ALL ABOUT BLOCK 8

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Across
  1. 2. New red blood cells are produced in the red bone ___.
  2. 5. A type of blood solids.
  3. 8. Breastbone.
  4. 9. Air sacs.
  5. 11. A large Blood vessel.
  6. 12. White blood cells are ___ than red blood cells.
  7. 14. The left side of the heart is ___ than the right side.
  8. 17. A heartbeat.
  9. 18. Phase one of a heartbeat.
Down
  1. 1. An average person has about 30 ___ red blood cells.
  2. 3. Divides the heart into two sides.
  3. 4. Phase two of a heartbeat.
  4. 6. Thoracic cavity.
  5. 7. Central organ of the cardiovascular system.
  6. 10. A liquid medium.
  7. 13. Gas exchanges are done by this.
  8. 15. ___ blood cells transport oxygen to the cells in the body.
  9. 16. The site of gas exchange.