Cardiovascular System

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Across
  1. 5. also known as heart strings
  2. 6. organ that pumps blood throughout body
  3. 8. discharging chambers
  4. 10. enters right atrium
  5. 11. the first heart tone
  6. 12. outside layer
  7. 13. leaves left ventricle
  8. 14. inner layer
  9. 15. the second heart tone
Down
  1. 1. open as blood is pumped through
  2. 2. send elecrical impulses to help heart beat
  3. 3. valves between ventricle and artery
  4. 4. the receiving chambers
  5. 7. double serous membrane
  6. 9. sound made by backflow of blood