Cardiovascular System

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Across
  1. 2. Innermost lining of blood vessels.
  2. 4. Smallest type of blood vessel.
  3. 6. Double-layered membrane surrounding the heart.
  4. 10. Small artery.
  5. 11. Abnormal swishing sound caused by improper closure of the heart valves.
  6. 12. Beat of the heart as felt through the walls of the arteries.
  7. 13. Relaxation phase of the heartbeat.
  8. 14. One of two upper chambers of the heart.
Down
  1. 1. Inner lining of the heart.
  2. 2. Record of the electrical activity of the heart.
  3. 3. Partition or wall dividing a cavity; such as between the right and left atria and right and left ventricles.
  4. 5. Largest artery in the body.
  5. 7. Muscular middle layer of the heart.
  6. 8. Gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cells.
  7. 9. Largest type of blood vessel; carries blood away from the heart to all parts of the body.