Cardiovascular System

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Across
  1. 2. Double-layered membrane surrounding the heart.
  2. 8. Small artery.
  3. 11. Largest type of blood vessel; carries blood away from the heart to all parts of the body. Notice that artery and away begin with an “a.”
  4. 12. Muscular middle layer of the heart.
  5. 13. Record of the electrical activity of the heart. The electricity is represented by waves or defl ections called P, QRS, or T.
  6. 14. Abnormal swishing sound caused by improper closure of the heart valves
Down
  1. 1. Beat of the heart as felt through the walls of the arteries.
  2. 3. Relaxation phase of the heartbeat. (From Greek diastole, dilation)
  3. 4. valve  Valve between the left atrium and the left ventricle; bicuspid valve.
  4. 5. Structure in veins or in the heart that temporarily closes an opening so that blood flows in only one direction.
  5. 6. Smallest type of blood vessel. Materials pass to and from the bloodstream through the thin capillary walls.
  6. 7. Largest artery in the body.
  7. 9. Innermost lining of blood vessels.
  8. 10. Inner lining of the heart.
  9. 11. One of two upper chambers of the heart.