Heart of The Matter

123456789101112131415
Across
  1. 1. Abnormal swishing sound caused by improper
  2. 4. You probably think this puzzles about you
  3. 6. Double-layered membrane surrounding the heart.
  4. 8. Contraction phase of the heartbeat. (From Greek systole, contraction.)
  5. 10. There will be this
  6. 11. bicuspid valve.
  7. 13. Muscular middle layer of the heart
  8. 15. Pumps for you
Down
  1. 1. Valve between the left atrium and the left
  2. 2. Small vein.
  3. 3. Beat of the heart as felt through the walls of the arteries
  4. 5. Inner lining of the heart.
  5. 7. Gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cells
  6. 9. One of two lower chambers of the heart
  7. 12. of the heart valves
  8. 14. Partition or wall dividing a cavity; such as between the right and left atria (interatrial septum) and right and left ventricles