10.7 cardiovascular terminology

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Across
  1. 3. Largest artery in the body
  2. 4. contraction phase of the heartbeat
  3. 6. Relaxation phase of the heartbeat
  4. 8. ECG
  5. 11. one of two lower chambers of the heart
  6. 12. dioxide waste released by body cells
  7. 13. Muscular middle layer of the heart
  8. 14. smal vein
Down
  1. 1. Smallest type of blood vessels
  2. 2. Bicuspid valve between the left atrium and left ventricle
  3. 3. Largest type of blood vessel
  4. 5. node Specialized nervous tissue in the right atrium that begins the heartbeat
  5. 7. Gas that enters the blood through the lungs
  6. 9. lower tip of the heart
  7. 10. Abnormal swishing sound caused by improper closure of the heart valves