Cardiovascular System

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Across
  1. 2. capillaries that emerge from the cellular environment and form small veins
  2. 5. third (inner) layer of the heart
  3. 6. contracting rapidly or irregularly (fibrillating)
  4. 8. heart contractions
  5. 9. increase in lumen size
  6. 11. relaxation periods of the heart
  7. 14. outer layer of the heart
  8. 16. pressure the pressure blood exerts on the walls of vessels
  9. 17. largest artery of the body
  10. 18. condition from slow pulse
  11. 23. pump of cardiovascular system
  12. 24. main constituent of the heart - second (middle) layer
  13. 27. smaller arteries that branch out to various parts of the body
  14. 28. hollow core of arteries
  15. 29. two main pumping chambers
  16. 30. vessels carrying blood away from the heart
  17. 31. transports poor blood to the heart
Down
  1. 1. condition from rapid pulse
  2. 3. circular muscles that open and close to regular the flow of blood through the capillary
  3. 4. inflammation of the pericardium
  4. 7. two saclike membranes that enclose the heart
  5. 10. flat, wrinkled extension in the atrium that fills with blood when the atrium is full
  6. 12. microscopic vessels that enter into organs and tissues
  7. 13. narrowing on the lumen
  8. 15. infarction (heart attack) blockage formed by dead cells
  9. 19. two receiving chambers
  10. 20. irregular heart rhythms
  11. 21. condition that develops when the cardiovascular system fails to deliver sufficient oxygen and nutrients to the body
  12. 22. inflammation of the heart valves
  13. 25. blood through the arteries caused from the left ventricle of the heart as it contracts and relaxes
  14. 26. unusual heart sounds
  15. 29. prevents backflow of venous blood