Cardiovascular System

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Across
  1. 2. sends electrical signals that contracts the upper heart chambers
  2. 5. carries oxygen-poor blood from the upper body areas to the right side of the heart
  3. 7. a flap thats in between left ventricle and left atrium to ensure correct blood flow
  4. 13. circulates from the systemic circulation into the right atrium
  5. 16. blood goes through rest of body and heart
  6. 20. the atrium that receives blood from the rest of the body
  7. 21. valve activity that fills and relaces the ventricles and the atria
  8. 22. the heart wall that is in the middle that is made up of cardia muscle
  9. 23. the outermost later that covers the heart and filled with pericardial fluid
  10. 24. sends the signal through this node the from SA node to the lower heart chambers which contracts them
  11. 25. part of the heart that has the lowest blood pressure
  12. 26. carries oxygen-poor blood from the lower body areas to the right side of the heart
Down
  1. 1. makes sure that oxygen-rich blood doesn't flow back into the left ventricle
  2. 3. an organ that pumps blood throughout the body
  3. 4. the atrium that receives blood from the lungs
  4. 6. circulates from the left atrium and to the body
  5. 8. close and open to allow blood flow in one direction through the heart
  6. 9. do most of the pumping of the heart
  7. 10. valve activity that empties and contracts the ventricles and the atria
  8. 11. the heart wall that is in between each chamber and is a thin layer of endothelial cells
  9. 12. circulation blood goes through lungs and heart only
  10. 14. a sac that is full of fluid that provides protection for the heart
  11. 15. makes sure blood flows from the heart to the lungs
  12. 17. makes sure blood flows from lungs to heart
  13. 18. right av valve
  14. 19. manages oxygen-poor blood to reach the lungs
  15. 25. largest vein in the body