Cardiovascular

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Across
  1. 1. relaxation phase of the heartbeat
  2. 6. smallest type of blood vessel
  3. 8. record of the electrical activity of the heart
  4. 9. largest artery in the body
  5. 10. inner lining of the heart
  6. 12. small artery
  7. 14. blood that is oxygen-poor
  8. 15. (of the heart)lower tip of the heart
Down
  1. 2. specialized tissue in the wall between the atria.
  2. 3. abnormal swishing sound caused by improper closure of the heart valves
  3. 4. located on each side of the neck branch from the aorta and provide blood to head, neck and brain.
  4. 5. (atria) one of two upper chambers of the heart
  5. 7. specialized muscle fibers connecting the atria with the ventricles and transmitting electrical impulses between them. (bundle of His)
  6. 11. largest type of blood vessel; carries blood away from the heart to all parts of the body
  7. 13. Blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle