Cardiovascular System

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Across
  1. 2. location of the heart
  2. 4. caused by the closure of the aortic valve and pulmonary valve
  3. 6. inner layer of the heart's wall
  4. 7. a sound made by the backflow of blood through either set of valves that cannot open or close properly
  5. 9. open as blood pumped through
  6. 10. protective outer layer of the heart's wall
  7. 11. backflow and repump
  8. 14. fills the space between the layers of the pericardium
  9. 15. discharging chambers for oxygen-rich blood
  10. 16. heart workload increased
Down
  1. 1. a double serous membrane surrounding the heart
  2. 3. allow blood to circulate to all parts of the body
  3. 5. the main organ in the cardiocascualr system and pumps blood
  4. 8. recieving chambers for oxygen-poor blood
  5. 12. muscular middle layer of the heart's wall
  6. 13. caused by the closure of the atrioventricular valves